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A HaOIII narrowband image of the Eagle Nebula (catalogued as Messier 16, M16, or NGC 6611).
The Eagle Nebula is part of a diffuse emission nebula, or H II region, which is catalogued as IC 4703. This region of active current star formation is about 7,000 light-years from Earth.
A spire of gas that can be seen coming off the nebula in the north-eastern part is approximately 9.5 light-years or about 90 trillion kilometers long. The nebula contains several active star-forming gas and dust regions, including the "Pillars of Creation".
About this image:
This image consists of old narrowband Hα and OIII data, that I reprocessed after combining it with more data that I recently imaged.
The Hydrogen dust and gas (the most basic and abundant element in the Universe), emits in the Red part of the spectrum, and the doubly ionized Oxygen emits in the Blue part of the spectrum.
Wavelengths of light in this image:
Hydrogen Alpha line 656nm (7nm bandwidth).
OIII line 500.7nm (6.5nm bandwidth).
Processing:
Pre-Processing and Linear workflow in PixInsight,
and finished in Photoshop.
Plate Solving:
Platesolve 2 via Sequence Generator Pro.
Astrometry Info:
Center RA, Dec: 274.716, -13.820
Center RA, hms: 18h 18m 51.796s
Center Dec, dms: -13° 49' 11.111"
Size: 60.8 x 40 arcmin
Radius: 0.606 deg
Pixel scale: 2.21 arcsec/pixel
Orientation: Up is 9.62 degrees E of N
nova.astrometry.net/user_images/2794874#annotated
Martin
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IC443 - Jellyfish Nebula
Telescope: Orion EON80ED
Camera: Atik 314L+
Filters: Astrodon 3nm Ha, 3nm SII, 3nm OIII
Exposure time: 18x20min (Ha), 8x20min (SII), 8x20min (OIII) : Total: 11 hrs 20 min
Flickr Explore: March 12, 2016
The Heart Nebula, Sh2-190 or IC 1805 is an emission nebula located in the constellation of Cassiopeia. It lies at around 7500 light years distant. I added another 3hrs of Ha, 7thAug2018 and 3.5hrs OIII, 24thAug2018 to last years data to give a total integration time of 10.5hrs.
NEQ6 PRO
TSAPO130Q @f/5
Canon 70D modified
Astronomik 6nm Ha, 6nm OIII and UHC clip in filters
Guided using SX Lodestar x2
Processed in Pixinsight and Photoshop.
Been planning to do this one for many months, could never build up the gumption to do it.
More work than my usual shot.
Tried making black PlayDoh using white and some old inkjet ink, ended up more gray.
A few weeks ago I picked up a great assortment of PlayDoh, many colors including black. So I molded and cut and pasted the thing up last week.
Got the courage to shoot it tonight. And mind you, the flash has been misbehaving.
But it got the shot, my solution for the classic Rubics Cube.
My camera for the stereo shot arrived Wednesday. A used G6. I messed around with it and got a nice shot of a Christmas bulb filled with jello. Focusing is a pain, but at first blush, the depth of field is greater than my D90.
The G6 was 135$ shipped, so a cheap camera will do a good job with this type of photo. It's all in the flash, folks.
I dug old folders and found some gems awaiting my processing. North is up, and east is to the left.
Here is an old frame of the object taken in Australia May 2010.
www.flickr.com/photos/hiroc/4716251503
Here is a deep image of the area in a paper by a researcher:
"Low surface brightness imaging of the Magellanic System: Imprints of tidal interactions between the clouds in the stellar periphery" by Belsla G et al 2016
equipment: Zeiss Aposonnar 135mmF2 and Canon 6D-sp4, modified by Seo-san on Takahashi EM-200 Temma 2 Jr, autoguided with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, Starlight Xpress Lodestar Autoguider, and PHD Guiding 2
exposure: 11 times x 15 minutes, 4 x 4 min, 7 x 1 minute, and 3 x 15 seconds at ISO 1,600 and f/3.2
site: 2,650m above sea level at lat. 24 37 47 south and long. 70 13 50 west near Cerro Armazones in Atacama Desert Chile
When a wall gets in the way of the drainpipe.
Better viewed large and thank you for your favourites.
Drusilla has gotten the hang of solving quadratic equations and loves drawing the parabola for the equation. It is so cool that the two solutions for the equation are the X intercepts for the parabola.
The name of the quadratic equation is related to the fact that you "complete the square" as you use it.
Blythe a Day - Four - 4/4/24
Daunting Drusilla Blythe
Math set - Target
Green cabinet - made by me from a box
Books - Erasers from Dollar Tree
Sh2-279 (alternatively designated S279 or Sharpless 279) is an HII region and bright nebulae that includes a reflection nebula located in the constellation Orion.
More info www.astro-austral.cl/
In celebration of Mats Valk, breaking the World Record by Solving the Cube in 4.74 seconds in November 2016
De magnitude visuelle de 7,4, elle est impossible à voir sans instrument.
Addition (alignement sur LES ETOILES) de 20 poses de 2mn à 1600iso avec un Nikon D7000 + lunette equinox 80x500 x0.8, F5.2, au col de Bacchus
2017-04-22_C41P_NkD7000+equinox80x500+0.8F5.2_20x2mn-1600a_500_Bachus_001-01a
St. Elisabeth church
Marburg
Germany
HDR
Sigma 10-20 mm
There are certainly a lot of ugly problems in the world due to a lack of water.
Here I thought that water could solve a few issues ;-)
The Bubble Nebula in narrowband.
HA, Sll, and Olll. All exposures were 30 minutes each, with a total exposure time of 26 hours.
Combined in the Hubble palette.
Scope:- TEC140
Mount:- Avalon fast reverse.
Camera:- Atik 490 cooled to -10
Captured in SGP
Processed In Photoshop and Pixinsight
Shot at home in the Uk, just north of Cambridge.
It took more than a year, but the squirrels finally figured out how to get to the window mounted bird feeder.
I spent hours trying to solve a maths problem, then found some required information was missing. This picture shows the similar thing. Some parts are missing to complete the expected geometrical shape.
EXPLORED 8th March 2011 :D
Golferenzo (PV) - 06/03/2010
First photo with EQ6!
Very windy.
-Televue NP101is with x0.83 focal reducer(main scope).
-Hayford 80mm aporefractor (guide scope).
-Skywatcher EQ6 mount.
-Orion Starshoot Autoguider camera with PHD.
-Canon 350D modified with Badeer ACF filter
15x5min light @ ISO1600, 14 dark, 32 bias, no flat.
A snowflake that doesn’t know what it wants to be! This intriguing snowflake has a shape that is battling between branches and a solid plate shape, and you can clearly see where the lines of battle have been drawn. View large!
As you’ve seen so far in this series, the tiniest snowflakes always have a way of being enigmatic and interesting. Maybe it’s the lack of complexity that allows us to focus on specific features, or maybe it’s that smaller snowflakes contain smaller details that we can more easily see and be curious about. In this case, there’s a mystery to solve!
The upper-right-most branch holds the story of the branching while the lower-left tells us how the crystal stays as a plate. In the former, we can identify a crystal split. The snowflake divides itself into two new planes when a cavity forms in the ice, a very common occurrence. What’s odd here is that the bottom plate grows the branch at the tip, but the rest of the bottom plate falls behind the top plate in growth. This might be a case where the knife-edge instability comes into play.
I don’t fully understand the physics (I’m a geeky photographer, not a physicist), but when a snowflake is incredibly thin, the growth can accelerate. If the bubble/cavity that cut the snowflake in half changed its thickness just at the tip, it could propel the tip into a branch-like growth without causing the same rapid growth to the rest of the crystal facets. It’s unusual, but not the first time I’ve seen it – something must behave slightly differently at the corner to evoke this behaviour.
On the other side of the snowflake, we see a very solid hexagonal shape, but the ghosts of branches are hidden closer to the center. How does this happen? Again, I’m not entirely sure. I love these mysteries! I believe the best explanation would be this: As the branches began to form, the growth of the top plate was keeping pace, likely due to the direction that the snowflake was falling. The same physics that made the branch grow faster than the edges of the underside are at play, but with more water vapour building up the top plate, it kept pace with the branching, and eventually overpowered it. As soon as any one plane of growth as the advantage of growing farther out, it chokes out the growth of the competition.
Again, my ideas are just the theories of a man who has studied snowflake growth for the fun of it, and has witnessed many thousands of these crystals to see how they grow. It’s open to interpretation – and I welcome yours!
For more musings on snowflakes and the most detailed photographic tutorial on the subject you’ll ever see, consider a copy of Sky Crystals: www.skycrystals.ca/book/ - it’s a great winter companion for any photographer or naturalist. Winter can be more tolerable when you ponder the mysteries in a single snowflake.
Hello folks,NGC6726.
Telescope: SharpStar 150 f2,8
Guide Scope:Zwo Mini Guidescope
Mount : Skywatcher HEQ5
Imaging camera: ZWO 2600MC
Guiding camera: ZWO 290MC
Filters: None
Plate solving: SGpro
Imaging software: Sgpro
Guiding software: PHD2
Processing software: Pixinsight
Frames:108 X 300s exposure @ 0Gain.
Integration:9 hrs
Here is the continuation of my large summer-2018 project.
I had imaged this region for about 13 nights altogether between July and October 2018. You can call me crazy, using so many nights for just one object, in a region where clear nights are rare :) But I really wanted to see if I could catch this beautiful Supernova remnant, and I'm glad it succeeded :)
Recently Pixinsight was supplied with the new Starnet++ module, which you can use to completely separate the stars from the background. I used this software to enhance the very weak nebulosity and was astonished to see how much more could be drawn from the background compared to the processing I did last year. All other processing was performed using Astropixelprocessor and photoshop.
Supernova remnants (SNR) are formed when a large star ends its life in a supernova explosion. About 300 of these remnants are currently known in our galaxy. One of the most famous remnants, the Veil Nebula, is located in the constellation of Cygnus. Although this is the most famous one in this constellation, it’s not the only SNR. Cygnus contains several obscure SNR’s, among which SNR 65.3+5.7 (also known as SNR 65.2+5.7).
SNR G65.3+5.7 was discovered by Gull et al. (1977) during an OIII survey of the Milky Way. Some parts of this SNR were already catalogued by Stewart Sharpless in his SH2 catalog as SH2-91, SH2-94 and SH2-96, but they were not recognized as being part of a bigger structure at that time. The idea that they could be part of a larger SNR was postulated by Sidney van den Bergh in 1960, but it took until 1977 for this to be confirmed.
This is one of the larger SNR in the sky spanning a region of roughly 4.0x3.3 degrees. Mavromatakis et al. (2002) determined the age of the SNR to be 20.000-25.000 years and the distance about 2.600 – 3.200 lightyears. The shell has a diameter of roughly 230 lightyears! This SNR is a predominantly OIII shell with also some H-alpha signal.
This supernova shell is quite weak and there are hardly any high-resolution images of this region. In the internet maybe 5-10 deep images of this shell can be found and, in most cases, they don’t cover the entire shell or the resolution is quite low because it was done by using photo lenses at short focal lengths. That’s why I decided to see if I could try to image the entire shell using my equipment, a TMB92 refractor in combination with a QSI583ws ccd camera. Because of its large size I needed to make a 3x3 mosaic to cover the whole region.
As so many nights were already necessary to cover the region in OIII I didn’t succeed in grabbing the H-alpha data, but on the internet I found the MDWsurvey (mdwskysurvey.org) initiated by David Mittelman (†), Dennis di Cicco, and Sean Walker (MDW). This is a marvelous project with the goal to image the entire northern sky in H-alpha at a resolution of 3.17”/pixel. I contacted them and told them of my effort to grab imagery of this SNR and they were very kind to provide me with the H-alpha imagery of this region, so that the entire SNR could be brought into view in reasonable high resolution.
This bicolor image shows a combination of about 53h of OIII data (made by myself) and 20 hours of Ha-data (made by the MDW survey) in a single image. In this way the full span of the shell can be seen in all its glory.
Image info:
H-alpha (astrodon 3nm, mdwskysurvey.org):
Telescope: Astro-physics AP130mm starfire
Camera: Fli Proline 16803
5 frames of 12x1200s each
OIII (astrodon 3nm):
Telescope: TMB92SS
Camera: QSI583ws
9 frames, 158 x 1200s total
Since our hummingbird chick fledged a while back, we had a close look at the nest last night. We thought it strange that there was only one chick in the brood. Examination of the nest solved the mystery - one egg just never hatched. I'm always amazed at the tininess of these nests. My thumb is resting on the rim of the nest just to give some scale. Jean found another nest in our yard earlier this week. Seems to be in incubation mode. The surviving chick a couple weeks ago in the first comment.