The Tadpole Galaxy, also known as UGC 10214 and Arp 188, is a disrupted barred spiral galaxy located 420 million light-years from Earth in the northern constellation Draco. Its most dramatic feature is a trail of stars about 280,000 light-years long. (Wikipedia) The Tadpole Galaxy is currently interacting with another galaxy and the tidal forces have created the 280,000 light-year tail.

Observation data (J2000 epoch)

Constellation: Draco

Right ascension: 16h 06m 03.9s

Declination: +55° 25′ 32″

Distance: 420 Mly

Apparent magnitude (V): 14.4

Apparent size (V): 3.6′ × 0.8′

Tech Specs: Orion 8" f/8 Ritchey-Chretien Astrograph Telescope, Celestron CGEM-DX pier mounted, ASI071MC-Pro, ZWO AAPlus, ZWO EAF, 180 x 60 seconds at -10C, processed using DeepSkyStacker and PixInsight. Image Date: April 13, 2023. Location: The Dark Side Observatory (W95), Weatherly, PA, USA (Bortle Class 4).

How to take photographs of the starry night sky.

In this tutorial, I mention the StarTrails software, and Deep Sky Stacker.

Music is Fin du Voyage, by Lzn02 - listen to it here at Jamendo.

Campo amplio al Sur - Sureste

Nikon D90 - AF-S DX NIKKOR 18-105mm f/3.5-5.6G @ f/8, 105mm - ISO 1600 - 35 minutos de exposición total - 70 lights de 30 segundos, apilados con DeepSkyStacker. Postprocesado con Adobe Photoshop CC.

I found this tricky to process without getting too much noise in the background.

Scope: WO 81GTF; Camera Canon D & CLS Filter; Mount: iOptron iEQ45-Pro.

Exposure: 9 x 400s Lights, 4 x Darks & 10 x Bias calibration frames. No Flats though.

Processing: Stacked in DSS cropped and tweaked in PSE8 & PS. Guided using PHD2, sub arcsecond graph throughout. V. Pleased with the guiding.

Equipment

Imaging Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Imaging Cameras

ZWO ASI 183 MM PRO

Mounts

Sky-Watcher NEQ6-Pro

Filters

Baader B 1.25'' CCD Filter · Baader G 1.25'' CCD Filter · Baader R 1.25'' CCD Filter · Baader L 1.25'' Filter

Accessories

ZWO EAF Electronic Auto Focuser · TSOptics TS Off Axis Guider - 9mm · Pal Gyulai GPU Aplanatic Koma Korrector 4-element

Software

Luc Coiffier DeepSkyStacker (DSS) · PHD2 Guiding · PhotoShop CS5 · FitsWork 4 · CCDCiel

Guiding Telescopes Or Lenses

TS-Optics 6" f/4 UNC Newtonian Telescope - Carbon

Guiding Cameras

Astrolumina Alccd5L-IIc

Acquisition details

Dates:

March 6, 2021

Frames:

Baader B 1.25'' CCD Filter: 10x180" (30') (gain: 53.00) -20°C bin 1x1

Baader G 1.25'' CCD Filter: 10x180" (30') (gain: 53.00) -20°C bin 1x1

Baader L 1.25'' Filter: 21x180" (1h 3') (gain: 53.00) -20°C bin 1x1

Baader R 1.25'' CCD Filter: 10x180" (30') (gain: 53.00) -20°C bin 1x1

Integration:

2h 33'

Combined from two nights, 14x8 min subs. Modded Nikon D5100, Improved DGM NPB filter, CCDT67 reducer, GSO 6" RC. IOptron iEQ30 Pro, guided via 50mm guidescope, SSAG, and PHD2. Stacked in DeepSkyStacker, processed in StarTools.

Picture saved with settings applied.

First light with skywatcher star adventurer

pentax k-5

takumar 200mm F4@F5

180s sub * 8

ISO 1600

with dark, flat, and offset

No guiding

@Kirk roadside park

Used my 150ED APO triplet refractor and unfiltered 314L+ riding on EQ6 pro to capture 60 subs at 1min each of this comet lying in the region of Perseus and Camelopardalis last night.

Stacked in Deepskystacker and minimal processing carried out in Photoshop CS2.

Image taken 11/10/17

"Roll on over you clouds of doom

The silver lining is coming through

Just say yes, just say yes, just say yes

Quit giving up so soon

Our love will win what war will lose

Every little bit of light

Every little bit of light

Helps get us through the night

Time fled from the west

Under a crescent moon

Feel the rattled sunset

The stars came unglued and the sky fell in

And the smoke withdrew from these ashes

Every little bit of light

Every little bit of light

Helps get us through the night these days

Just say yes, just say yes, just say yes

Quit giving up so soon

Our love will win what war will lose

Every little bit of light

Every little bit of light

Helps get us through the night these days"

—Jason Collett

M42 Orion Nebula

Date: 01-06-2013

Telescope (Lens): Orion 8in f/3.9 Newtonian Astrograph

Addition Optics: Baader Planetarium RCC1 Coma Corrector

Camera: Canon XSi

Exposures: 20 x 5 sec (ISO 400) + 20 x 30 sec (ISO400) + 50 x 150 sec (ISO400)+ Darks x10 @ 5,30,&150sec ,Flats x10, & Dark Flats x10

Processing: DeepSkyStacker, Photoshop

Mount: Atlas EQ-G

Tracking: EQMOD / Stellarium / PHD Guiding

Guidance Camera: Microsoft Lifecam 3000HD

Guidance Scope:Stellarvue SVR 80ED Raptor

Astromomy weather as forcasted by Canadian Meteorological Center:

Cloud Cover: Clear

Transparancy: Above Average

Seeing Category: III (Average)

Temp: 23°F

Humidity: 70°

Light Pollution: "Red" - Based on Light Pollution Map

My first attempt to increase the dynamic range of M42. Three sets of images were stacked and processed separately (5, 30, 150 sec exposures). Then the 3 images were brought together and layered.

Excuse me whilst I faff about with old data - just having fun.

I'd just got the ED80 and was testing it along with the guiding. Not sure I was pointing at the intended target, but hey ho :)

Not a lot you can do with this apart from slap a few spikes about. Looks kinda pretty though, so I thought I'd post it :)

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

18 x 180 secs, iso1600, total 54 minutes

Guiding: Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5. Spikes courtesy of Star Spikes Pro

Comet ISON take between 0552-06005hrs.

3x120sec (6min total), 2x2 Binned

Stacked in DeepSkyStacker & processed in PS2.

Camera: Atik 314L+ Mono

Filters: Baader RGB.

Scope: Sky-Watcher Equinox 80ED .

Mount: AZ EQ6-GT goto, Unguided.

Dumbbell Nebula/Nebulosa Planetaria de Dumbbell (M27, Messier 27, NGC 6853)

The Dumbbell Nebula is a planetary nebula in the constellation Vulpecula, located at a distance of 1250 light-years.

La nebulosa Dumbbell es una nebulosa planetaria​ en la constelación de Vulpecula, que se encuentra a una distancia de 1250 años luz.

- Date/Fecha: 23/08/2020

- Location/Lugar: Piedrafita de Jaca - Huesca (42°42'4.4"N 0°19'52.6"W)

GEAR/EQUIPO

- Tracker/Montura Sky-Watcher AZ-GTi

- Guiding with QHY 5L-II Mono and guidescope EZG-60

- Camera Sony ILC3-A7M3 Modo APS-C

- Lens Sony FE 200-600mm F5.6-6.3 G OSS

IMAGE/IMAGEN:

- 100 Lights at 900mm, ISO 10000, 20s, f6.3

- 32 Darks at ISO 10000, 20s, f6.3

- Total time of exposition/Tiempo total de exposición 31min. 58seg.

SOFTWARE

- Stellarium Scope & Stellarium to guide the tracker

- Stacked with DeepSkyStacker

- Guiding with PHD2

- Image viewer Adobe Bridge

- Image processing with Adobe Camera Raw and Adobe Photoshop CC

©2020 All rights reserved. MSB.photography

Thank all for your visit and awards.

Canon 5DMII + Canon 100mm f/2.8 + Montura vixen Polarie.

WEB -| www.josemiguelmartinez.es

Canon EOS 600D, ISO 1600, f 3.5, 10 minutes, 18 mm, and DeepSkyStacker software

At the top of the mountains, the sky is simply gorgeous ! This place allowed me to take clearer photos of our galaxy than near cities.

This year, I've returned to M31, which is one of my favourite deep sky objects. Conveniently located in the northern sky, large and bright enough, beautifully fits the field of view of my TAIR-3S 300 mm telephoto lens... And in any case an interesting and beatiful object in my opinion! It might even look more spectacular in a few billion years, when it will probably crash head-on into our own Milky Way. Too bad I probably won't be around to watch that...

For this take, I've increased the original exposure time from my first try in 2021 by about 12 times, to 4.5 hours. In total, four nights of observation went into this image so far. I also acquired a better tracking mount, and learned a lot about image processing since then (among others, photometric colour calibration using plate solving in SiRiL). Let's see how much more exposure depth I can add next year!

Image details:

Lens: TAIR-3S 300 mm f/4.5 @ f/5.6 (except the first 44 subs from 2021, which were taken @ f/4.5)

Camera: Samsung NX30 mirrorless APS-C, unmodified

Acquisition: 544x 30 s (total 4h 32 min) @ ISO3200

Correction: 20x flats, 100x darks

Filter: Rollei AstroKlar light pollution filter

Tracking: Skywatcher Star Adventurer (unguided), clockwork barndoor (for first 44 subs)

Processing:

Stacking: Deep Sky Stacker, colour calibration turned off

Colour calibration: SiRiL, photometric using plate solving

Processing: SiRiL, fitswork, Luminar 2018

HCG 56 (Hickson Compact Group 56) is comprised of 5 galaxies at magnitudes 15-16.

11 x 4-minute, manually guided exposures at f/4 and ISO 1600. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional; noise reduction via Cyberlink PhotoDirector.

My first attempt at photographing this galaxy.

All processing done in DeepSkyStacker and Gimp.

It's been almost 5 months since I went out to a relatively dark site to do some astrophotography. It was clear and transparent tonight with few mosquitos to bother me. I've a few more that I will process later.

A Note marks the location of the Type 1a supernova, which I first saw last Wednesday - shortly after it was discovered. The explosion actually happened about 12 million years ago, but the light has only just reached us.

Manually, off-axis guided for 7 x 5-minute exposures at ISO 1600, f/4.

Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; initial curves adjusted and noise reduced in Canon Photo Professional; final curves & colour-balance adjusted using Paint Shop Pro.

somma di 118 foto a 3200iso, nikon d3000, 18-55 a 55mm,f4.5 ,

8 secondi singolo scatto. totale esposizione 15 min circa

software usati deepskystacker + pscs5

NGC2903 is a local barred spiral galaxy about 20million light years away, with some bright tight spiral arms and two much fainter arms stretched out from the galaxy. View at original size to see the outer arms.

61 exposures ranging from 30 seconds to 2 minutes, 53 minutes total exposure time. Flat frames also used. Shot on a Canon Ti1 at prime focus on a Meade 10" SN-10-AT.

Must get light pollution filter, and fix a few problems.

I would have cropped it down more to hide the black band along the lower right (dark part of camera chip at bottom of some sub-exposures, not eliminated by the flat frames) ... but, in that corner there is a cluster of tiny galaxies. I couldn't find much info on them, but by comparing their size to the main target I would guess they are 500+ million light years away.

There are several other tiny background galaxies in this shot, fuzzy specs (fuzzier than the splotchy stars) How many can you count?

Camera di acquisizione: Canon 600D Baader

Telescopio: Canon EF-S 55-250mm f/4-5.6 IS II

Software: photoshop, DeepSkyStacker, O'Telescope BackyardEOS

Risoluzione: 4337x2891

Date: 09 novembre 2015

Pose: 59x60" ISO1600 14C

Integrazione: 1.0 ore

Dark: ~11

Flat: ~15

Bias: ~21

Giorno lunare medio: 27.05 giorni

Fase lunare media: 6.80%

Scala del Cielo Scuro Bortle: 7.00

Temperatura: 13.00

Astrometry.net job: 842668

Centro AR: 60,169 gradi

Centro DEC: 36,573 gradi

Campionamento: 3,735 arcsec/pixel

Orientazione: 107,177 gradi

The Elephant's Trunk nebula is a concentration of gas and dust located in the constellation Cepheus, ~2,400 light years away. The column of nebulous gas cloud is being ionized and lit up by a massive star inside (picture it inside the round section at the top of the trunk), and is thought to be a site of new star formation.

Personally, I like all the dusty, smoky regions surrounding it.

I have already attempted this one, but wasn't too happy with the noisiness and colour balance in my first try. So here we are again, this time with much more Hydrogen alpha data (collected 5+ hours, but only used about 3.5 hours worth thanks to clouds and haze).

Details:

William Optics FLT110 @ f5.6

QHY9 CCD & Canon DSLR

QHY9 = 3.5 hours of Ha exposures (10 mins each) at -30 deg C, Baader 7nm Ha filter

DSLR = 11 x 5min exposures with modified Canon XSI, IDAS LPS filter

Stacked in DeepSkyStacker, Processed in Photoshop CS2

Ha used as Luminance, and Ha also blended into each RGB channel in varying proportions

Taken over two nights in September 2009 from my backyard observatory in Toronto, Canada

22 x 30-sec exposures at f/4 and ISO 1600. Modified EOS 600D & Revelation 12" Newtonian reflector telescope.

Registered and stacked using DeepSkyStacker; curves adjusted in Canon Photo Professional.

NGC 2392 is a planetary nebula, which is a star that has shed its outer layers. The object is very small, so this is a very heavy crop.

Moon out so I thought I'd try a Globular Cluster.

Sky-Watcher Quattro 8CF, Baader coma corrector, HEQ5-Pro, Canon 600D

8 images, 60 seconds each, DeepSkyStacker 3x drizzle.

View in World Wide Telescope

Object Details:

Globular cluster NGC 6712 lies about 22,500 light-years from Earth, contains approximately 94,000 stars and is estimated to be about 10 billion years old. Shining at magnitude 8.6 and having an apparent diameter of just over 7 arc-minutes, it (and IC 1295) can be found in the constellation of Scutum.

Planetary nebula IC 1295 is (by comparison a 'mere') 3,300 light-years distant. Glowing at magnitude 12 it spans just 1.7 x 1.4 arc-minutes in our sky.

Image Details: The attached was taken by Jay Edwards at the HomCav Observatory on the evening of July 26, 2019 using an 8-inch, f/7 Criterion newtonian reflector and a Canon 700D DSLR tracked on a Losmandy G-11 mount running a Gemini 2 control system. This in turn was guided using PHD2 to control a ZWO ASI290MC planetary camera / auto-guider in an 80mm f/6 Celestron 'short-tube' refractor.

This is my first attempt at imaging these object, and as such is a test consisting of a (relatively speaking) very short stack totaling only 45 minutes of exposure (not including darks, flats & bias frames).

Although I was fairly pleased with the result, given the large difference in brightness between the core of the globular cluster and the outer regions of the planetary nebula, I look forward to trying an HDR-like approach on these objects in the future in an attempt to bring out additional details in the nebula's outer regions while simultaneously preventing the globular's core from overexposing.

Stacked in DeepSkyStacker and processed using PixInsight and PaintShopPro, as presented here in nearly 'full frame' (having only been cropped slightly to remove the minor shifts between frames), re-sized down to HD resolution and the bit depth has been lowered to 8 bits per channel.

Fujifilm X-T10 + Fujinon XF 18-55 f/2.8-4 @ 18mm and f/4, ISO 3200, tracking with iOptron SkyTracker Pro, stacking with DeepSkyStacker, editing in GIMP, taken May 8.

This is a 2 x 2 mosaic of tracked 90 sec. exposures for the sky, and untracked exposures for the trees. I stacked 2 exposures for each sky panel to reduce noise, and then combined the 4 panels manually in GIMP.

I was aiming to capture the Cygnus nebulae on the right; the inclusion of the Heart and Soul Nebulae and the Double Cluster in Perseus on the left was a happy accident. The light trail at the top is an airplane.

It's a huge mess if you pixel peep, but I like the overall impression, and am glad I came away with something for the lost sleep, and considering that I forgot the part to attach my camera to my ballhead and had to use rubber bands.

[Edit: reprocessed]

Quando stavo scattando non sapevo della triste notizia, ho fatto appena in tempo a scambiarci qualche email per comprare quello che e' diventato il mio nuovo strumento, e mi spiace e mi rammarica non averlo potuto conoscere meglio :( un saluto giovanni, sperando che ci guardi da lassu!

Giovanni Sostero

"stavo surgelando a -10, ma ero troppo smanioso di provare la nuova reflex arrivata fresca fresca dalla corea del sud (e sbavata lungo tempo dal medesimo)

ho fatto qualche prova di iso, sparandola a 2500 e ho appurato che il sensore in montagna scende ancora di piu, e' arrivato a -25 e poco piu! (mentre le mie ditina sante avevano un parziale congelamento nell'attesa)"

Telescopi o obiettivi di acquisizione: Orion 8" Ritchey-Chretien

Camere di acquisizione: Canon / CentralDS EOS Astro 50D

Montature: Sky-Watcher EQ6 Pro

Telescopi o obiettivi di guida: 80/600

Camere di guida: LVI Smartguider 2

Software: DeepSkyStacker, Adobe Lightroom 3

Filtri: Orion Skyglow 2" Filter

Date: 08 dicembre 2012, 10 dicembre 2012

Luoghi: Fubine (AL), Seggiovia Sauze d'Oulx (TO)

Pose:

Orion Skyglow 2" Filter: 11x180" ISO2500 -18C bin 1x1

Orion Skyglow 2" Filter: 12x480" ISO2500 -24C bin 1x1

Integrazione: 2.1ore

Dark: ~4

Flat: ~16

Scala del Cielo Scuro Bortle: 2.00

Temperatura: -10.00

EXIF - 180X120" (6h), Gain 120

Calibration: Flats - 60, Darks - 60

Camera: ZWO ASI294MC Pro (cooled to -10°C)

Filter: Astronomik L-2 - UV IR Blockfilter 1,25"

Main optics: Sky-Watcher Explorer 200P

Mount: Sky-Watcher EQ6-R Pro

Guiding: Artesky UltraGuide 70 + ZWO ASI120MM Mini

Controller: ZWO ASIair Pro

Software: DeepSkyStacker + Pixinsight + Photoshop

Location: Medviđa

A planetary nebula is formed when a star puffs off its outer layers and these expand into space. They are not related to planets, but rather looked like planets to early telescope users - hence the name.

This is an image from April this year, but as with so many of my deep sky work I've included frames taken in previous sessions to reduce noise and therefore to help show subtler details.

29 x 1-minute unguided frames at ISO 6400 (new data) and 15 x 5-minute manually-guided frames at ISO 1600 (older data from 2013 and 2014). Modified EOS 600D & Revelation 12" f/4 Newtonian reflector telescope.

Frames registered and stacked in DeepSkyStacker software; curves adjusted in Canon Photo Professional; noise and light pollution colour gradients reduced in CyberLink PhotoDirector. I also used Noel Carboni's astronomy tools in Photoshop Elements to reduce the prominence of the stars (which otherwise dominate after stretching the contrast).

Comet C/2014 Q2 (Lovejoy) looking spectacular on 8/01/2015. Taken from the Gold Coast Hinterland Australia using Olympus OMD EM1 and Zuiko Digital 150mm f2.0 lens on IOptron Skytracker mount. 11x30 second exposures ISO1600 Stacking on Stars and Comet in DeepSkyStacker and Processing in Neatimage and Photoshop.

5 scatti uniti con deepskystacker exp totale 20minuti, 800iso nikon d3000 18-55mm f4

Vixen R200SS + EOS60D(ASTRO60D) 9x600sec (-7.2℃)

on TAKAHASI System90(Custmized by K-ASTEC)

(Total:90min)

Guiding:Lodester

RAP2, DeepSkyStacker, StellaImage7, Photoshop CS6

Locations:at the foot of Mt.Hakusan, Ishikakwa, Japan

Sep. 2013

Orion Nebula M42.

My first stacked image and Nebula.

Taken with a Canon 6D and 70-200mm + x2. F5.6 (due to the x2), 30 seconds and 25600 ISO

191 images stacked using DeepSkyStacker (thanks Paul) and processed in Lightroom.

The galaxy Messier 100, a.k.a. the "Blowdryer Galaxy" (who thinks up these names?) is one of the largest and brightest members of the Virgo Cluster of galaxies. It is located in the constellation Coma Berenices. Messier 100 is an example of a "grand design" intermediate spiral galaxy. It is approximately 55 million light-years] distant from Earth and has a diameter of 107,000 light years.

Messier 100 is considered a starburst galaxy, with the strongest star formation activity concentrated in its center - where intense star formation has been underway for about 500 million years.

The image also captures several other galaxies of the Virgo Cluster. To the left is the spindle shaped NGC 4312; it too is a spiral galaxy, but we view it nearly edge on. It shows us a brighter nucleus, a dimmer surrounding disk, and an outer rim that blends into the darkness of interstellar space. At the 12:00 position relative to Messier 100 is a small fuzzy ball, the elliptical galaxy NGC 4328. At the 02:30 position relative to Messier 100 is another elliptical galaxy, NGC 4322. NGC 4322 appears to be connected to Messier 100 by a faint glowing stream. These are probably stars and dust/gas clouds that have been wrenched from the two galaxies by the gravitational tides of their interaction. Similar streamers of stars and gas can be seen between our own Milky Way Galaxy and the two satellite galaxies, the Large and the Small Magellanic Clouds. If you look around the image, you might find a few other galaxies - I have not been able to identify them yet; I will tag more as I learn their names. This area of the sky abounds with them!

I was having fun observing this galaxy group, up until the local temperature dropped to the dew point. I found myself in need of a way to de-fog my lenses. Not having a battery powered blowdryer... HEY! THAT'S WHERE THIS GALAXY'S NICKNAME CAME FROM!

The winter doesn't end without photographing the famed Messier 42.

The image shows the Great Orion Nebula and the De Mairan's Nebula.

Photo spec:

Celestron C8 f/10

Celestron CG5 GT

Nikon D7000 (Unmodded)

30sec x 98 frames

1600 ISO

Processing:

DeepSkyStacker

PixInsight LE

Photoshop CS6

Photo by Janmejoy Sarkar

On May 2nd, 2014, I decided to take some photographs of Galaxy Messier 101 (or M101) in the constellation Ursa Major. It is also more commonly known as the Pinwheel Galaxy. I noticed that in the Starry Nights Pro software program that there were a number of New General Catalog (NGC) objects associated with this galaxy, especially in the spiral arms. The 29 minute stacked exposure is my first attempt to examine some of these associated NGC objects that are part of M101. I plan on adding addtional time to this as weather permits. Equipment: Canon T4i, 400mm lens, iOptron ZEQ25GT mount. Software: Starry Night Pro, Backyard EOS, DeepSkyStacker, ImagesPlus and Corel Paintshop Pro. Observation Location: 40.8978786 N,75.8921584 W

Telescopi o obiettivi di acquisizione: Orion Mini Guidescope

Camere di acquisizione: SVBONY SV305

Montature: Celestron SLT

Software: SharpCap Pro 3.2 Sharcap · DeepSkyStacker · Maxim DL · photoshop

Date:02 Gennaio 2021

Pose: 219x10"

Integrazione: 0.6 ore

Giorno lunare medio: 18.07 giorni

Fase lunare media: 88.13%

I stacked the original 10 RAW frames from this photo with the 5 RAW frames from this one (a total of 51 minutes' exposition time), just to see what would come out.

Pretty nice results, I think - The bright stars stand out better without looking hazy, and Barnard's Loop and the Horsehead Nebula are more visible too.

- www.kevin-palmer.com - There are a lot of astronomical objects which have names that don't seem to fit. But this object strongly resembles its name: the California Nebula. It is located in the constellation Perseus and is very difficult to see even with a telescope because of its low surface brightness. The nebula is made up of hydrogen gas that glows because of the radiation from the nearby star Menkib. Also known as NGC 1499, this nebula covers roughly as much sky as 5 full moons. On the right side of the image dark nebula can be seen. It is made up of insterstellar clouds of dust so thick that it obscures the light of stars behind it.

This was shot with a Takumar 135mm f2.5 lens at f4, iso 1600. It is a stack of of 20 2.5 minute frames, plus 8 darks, and 8 bias frames. An iOptron Skytracker was used to track the stars.

This is now 275 subs over 8 sessions totalling 17 hours, and is slowly getting there. Still needs more time, but I suspect it will have to wait until next year now. Used a different processing technique to my previous sad looking version, and it seems to have done the trick. Got Hubble's Variable thingy in there this time as well :)

I won't be sorry to see the back of this :)

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

275 subs, 3-6 mins, iso 800-1600, total 17 hours

Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5. Spikes courtesy of Star Spikes Pro

I decided to take advantage of the new moon, drag my telescope, and do some astrophotography last night...even with the time change and losing an hour of sleep. I'd say the bit of sleepiness today was worth it to get back into Astro and get this shot of my first time imaging this nebula!

The Rosette Nebula (NGC 2237) is 65 light-years across and 5,500 light-years away from Earth. It is visible in the sky between the constellations Gemini and Orion, in the head of the constellation Monoceros.

Equipment:

SkyWatcher EQ6-R

Nikkor 500mm f/4 P AI-S at f/5.6

Sony a7SIII (unmodified)

ZWO 30mm Guide Scope

GPCAM2 Mono Camera

Acquisition:

Taos, NM: my front yard - Bortle 3

32 x 180" for 1 hour, 33 min, and 31 sec exposure time.

5 dark frames

15 flats frames

15 bias frames

Guided

Software:

SharpCap

PHD2

DeepSkyStacker

PixInsight

Photoshop

Lightroom

I polar aligned my mount using SharpCap Pro. My Sony a7SIII and adapted Nikkor 500mm f/4 P AI-S were mounted on an ADM vixen rail and secured to the SkyWatcher EQ6-R mount. The guide scope/camera was attached to the camera's hot shoe. I used PHD2 to autogude during the imaging session. DeepSkyStacker was used to combine all frames, and the outputted TIFF file was brought into PixInsight using: STF, Cropping, Dynamic Background Extraction, BlurXTerminator, plate solving, color correction, NoiseXTerminator and then the DSO was separated from the stars, and both files processed and stretched separately and then recombined using PixelMath. That file was brought into Lightroom for Metadata and EXIF tags, light post-processing, and cropping to the final image.

Target:IC1396 Elephant's Trunk Nebula in the Constellation Cepheus. Dense globule within ionised gas region at 2400 light years.

Location:05/12/2020 St.Helens UK, Bortle 8, 72% Moon, high cloud present, frosty.

Aquisition:19x 180s (SII), 17x 180s (OIII), 17x 180s Ha, Gain 139 Offset 21. Total Integration 159 min.

Equipment:Imaging; Skywatcher Esprit 100ED on HEQ5Pro mount. Zwo ASI1600MM Pro with EFW mini and Baader narrowband filters.

Guiding; Skywatcher 9x50 Finder with ZWO ASI120MM.

Software:Aquisition; NINA, PHD2.

Processing; DeepSkyStacker, Photoshop, Starnet++.

Memories:Enjoyable to be imaging after a very long period of cloud. High cloud interfered with capture and eventually cut short the session so hope for chance of more data soon.

First light for my Sky Watcher Evostar 80ED

This was captured from my back garden in light polluted Nottingham, I just couldn't wait to test out the telescope, gibbous moon or not.

I can foresee a visit to a dark sky site in the near future!

Canon 60D

SW Evostar 80ED f/7.5

EQ6 Pro (EQASCOM)

Astronomik EOS CLS Clip Filter

29 frames at ISO 1600

180s per frame

Total integration time: 87 minutes

Off axis guided using an SPC900 webcam and GuideDog.

Stacked in Deep Sky Stacker, processed in Photoshop, no flats, darks or bias frames used.

No focal reducer/corrector used.

M42 The Orion Nebula taken by Dan Brandon on 10-25-13 with an Orion 10"Newtonian Astrograph and a Canon T3i DSLR camera. This image is 9x10 S 9x30s 9x60s 9x120s exposures Stacked using DeepSkyStacker

獵戶座大星雲 Orion Nebula

（M42，NGC 1976）

NIKON Z6II

Tokina SZX SUPER TELE 400mm F8 Reflex MF

STC IC 內置型濾鏡架組 (Clip Interchangeable Filter Series) - 多波段干涉式光害濾鏡 (Astro Multispectra Filter)

ISO 3200 60s F8

Light frame ：22p = 22min

Dark frame：10p

Flat frame：15p

DeepSkyStacker

Adobe Lightroom

2020-04-04

Conjunction. Venus and Plejaden

DSS Stack 103 pic's und process in LR

EOS 80D Sigma 150-600c @484

20sec f/7.1 ISO400

exposure time total 2060 sec

My Sony A7S was recently defiltrated and I wanted to test it on a classic object from the night sky, the Orion constellation. I have three lenses (Samyang F1.4/24mm, Zeiss Loxia F2/50mm, Samyang F2/135mm) for astrophotography. Here is the result with only 3 min exposure.

Astro Modified Sony A7S (Astrodon)

Zeiss Loxia 50mm/F2 to F2.2

No Tracker

18x10s (3min), ISO6400

Processing : DeepSKyStacker, Fitswork, RawTherapee