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A ski mountaineer checking out the many options for a perfect day of #skiing at #Tuckermans from Hojo's. This guy proceeded to head up to the Hillman's/Dodge's area and I headed up into the bowl where I had the place to myself for 2 hours! The first run was still icy but the next 5 were amazing!
I'm on facebook now!
- www.kevin-palmer.com - This was my first and last chance to point a telescope at Comet Tsuchinshan-ATLAS.
This image is of C/2025 A6 (Lemmon). I imagined this last Friday. Currently, it’s a pretty bright comet that’s shining at a magnitude 5. From the city and urban areas, it’s not naked eye visible, but from a dark sky site it can be seen through binoculars and long exposure photography.
This image was a challenge for me to get. After setting up my rig and powering everything on, I discovered the ASIAIR couldn’t detect my guide camera. At the time I couldn’t figure out why the guide camera wasn’t working. That meant I either couldn’t lock onto a guide star or I would have to manually dither. I was determined to make this image work especially since I paid an entrance fee of $15 to get into the local state park. I ended up setting an auto run sequence of 3 (30 second) exposures. After each auto run sequence I moved the framing ever so slightly in the sky atlas of the ASIAIR app. I repeated this until I got about 35 minutes worth of data. To top it off, the area I was set up gets a little breezy as the night goes on. So, some of the frames werent exactly sharp. Nevertheless, I managed to get enough data to build an image. Later, I discovered my USB cord for the guide camera was bad. The next day I ordered spare USB cords for my rig so I didn’t have another dilemma again.
Image Detail:
- 17 minutes of total integration time (30 seconds, gain 100, camera cooled to 14 degrees)
Equipment:
- SVBONY SV503 80ED
- Sky Watcher Star Adventurer GTi
- ZWO ASI 2600MC Pro
- ZWO ASIAIR Mini
- ZWO EAF
- ZWO 120MM guide camera
- ZWO guide scope
Software:
- PixInsight
- Adobe Photoshop
- RC Astro Blur Xterminator
- RC Astro Noise Xterminator
- RC Astro Star Xterminator
May/2017, Leeuwarden
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Fun to fool around with a tele, wonder if he saw me.
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© Copyright Visual Flows / All rights reserved
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Netherlands License.
Looks like this big ram is scoping things out, but he was actually in the process of sitting down on top of this ledge right across from the confluence. And yep, it was quite cold, as you can tell from his breath.
Have a great Sunday, and as always, thanks for all your visits and comments!!!!!
© Darlene Bushue - All of my images are protected by copyright and may not be used on any site, blog, or forum without my permission.
Closer view of the working end of my scope setup so I can label everything (with notes) for those who are interested
This big dome in the woods used to house the largest of the telescopes at the Royal Greenwich Observatory. I can remember visiting it when I was a child in the mid 1970s not long before it moved to the Canary Islands. I can remember there being an outcry at the time but in truth light pollution had caught up with it by then and it was never likely to stay.
This is my third time shooting the Crescent Nebula! I had first shot it [back in 2017](www.reddit.com/r/astrophotography/comments/7es9n1/c27_the...) when I still used a DSLR for astrophotography. I still use the same scope, but eventually upgraded to a monochrome astro cam, and this was my first target using Hydrogen alpha + Oxygen-iii narrowband filters [in 2019](www.reddit.com/r/astrophotography/comments/bumgk9/the_cre...). This year I decided to shoot it again, although I combined this years data with the data from 2019 since my setup then was identical to how it is now. I did have to heavily crop in on this image due to differing camera rotations, but I ended up with a higher signal to noise ratio overall by combining the data. I also [made a starless version of this pic](i.imgur.com/XzCdtah.jpg) which better shows off the faint nebulosity, including the Soap Bubble Nebula in the bottom left.
Captured over 5 nights in May 2019 (Bortle 7) and 4 nights in May 2022 (Bortle 6)
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**[Equipment:](i.imgur.com/ejpKkwU.jpg)**
* TPO 6" F/4 Imaging Newtonian
* Orion Sirius EQ-G
* ZWO ASI1600MM-Pro
* Skywatcher Quattro Coma Corrector
* ZWO EFW 8x1.25"/31mm
* Astronomik LRGB+CLS Filters- 31mm
* Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
* Agena 50mm Deluxe Straight-Through Guide Scope
* ZWO ASI-120mc for guiding
* Moonlite Autofocuser
**Acquisition:** 26 hours 5 minutes (Camera at Unity Gain, -15°C)
* Ha - 61x360" + 88x300"
* Oiii - 54x360" + 87x300"
* Darks- 30
* Flats- 30 per filter
**Capture Software:**
* Captured using [N.I.N.A.](nighttime-imaging.eu) and PHD2 for guiding and dithering.
**PixInsight Processing:**
* BatchPreProcessing
* SubframeSelector
* StarAlignment
* [Blink](youtu.be/sJeuWZNWImE?t=40)
* ImageIntegration
* DrizzleIntegration (2x, Var β=1.5)
* DynamicCrop
* DynamicBackgroundExtraction
* EZ Decon
* NoiseXTerminator
* STF applied via HT to bring each image nonlinear
**Combining Channels:**
> really like how the colors turned out on this, especially the slight gold/yellow in the nebula compared to the red in the background
* Pixelmath to make RGB image using [ForaxX's HOO palette](thecoldestnights.com/2020/06/pixinsight-dynamic-narrowban...):
>R= Ha
>G= ((Oiii\*Ha)\^~(Oiii\*Ha))\*Ha + ~((Oiii\*Ha)\^~(Oiii\*Ha))\*Oiii
>B= Oiii
**Nonlinear:**
* LRGBCombination with extracted L as luminance, used for chrominance noise reduction
* Shitloads of CurveTransformations to adjust lightness, saturation, contrast, hues, etc. with various masks
* NoiseXTerminator
* More Curves
* EZ star reduction
* NoiseGenerator to add noise into reduced star areas
* Even more curves
* ColorSaturation to better bring out the Oiii regions
* More NoiseX
* Resample to 80%
* Annotation
I didn't think I was going to be able to see any of this occultation. It had been cloudy most of the day, but the clouds started to thin in the evening. Because of the forecast, I hadn't planned to go to campus to try to photograph it from there. Instead, as I saw I might be able to get something, I got my Coulter Optical 10" Dobsonian out of the garage and held my Samsung Galaxy S22 Ultra up to the eyepiece. The eyepiece was a 14 mm ultra-wide FOV from Meade. I started taking video, trying to hold my phone in place while nudging the scope along.
There were plenty of parts of that video that were unusable, and there were still a lot of high clouds. After chopping up the video to get segments to run through AutoStakkert, I settled on these four times. From left to right, these represent the view at 2023-01-31 043346 UT, 043505 UT, 043600 UT, and 043601 UT. The first two are stacks of about 100 frames, while the last two images are stacks of about 10 frames. That makes the longer stacks a bit over 3 times less noisy than the shorter ones. Compare the details in the craters and mountains in the first two images with the last two.
The two most prominent craters in the image are Copernicus in the south (toward the bottom) and Plato in the north. We also get about half of Mare Imbrium and half of Mare Serenitatis. One thing that stood out to me is the one illuminated mountain beyond the terminator. It looks like this is Promontorium Laplace, a 2.6 km high peak at the edge of Sinus Iridum.
After stacking, I did sharpening in PixInsight, then used Photoshop to align the images in this arrangement.
Lunation: 9.32 days
Illumination: 74.5%
Distance: 393300 km
Altitude: 75°
As the otter was eating the small fish it just caught and the mother Mallard was escaping with her two ducklings (two previous posts), this eagle flew overhead and carefully scoped out the events transpiring below before continuing on it's way.
Category: Bill Me Later
The Xeno Hovercar Company, formed in the late 2030's as a conglomerate of several small hovercar startups was the first company to successfully sell hovercars in mass. Small, quiet turbines made them usable within cities, and their sleek design made them irresistible to consumers. They were sold for exorbitant prices, and very soon after release three words were commonly heard across dealerships- "Bill Me Later"
[Scope 1]
Scope: Vixen VSD70SS (fl:385mm, F:5.5)
Camera: ZWO ASI6200MC Pro (-10℃)
Others: ZWO EAF focuser, ASI AIR Plus-256G(non Dithering)
Exposure: gain100, 3min x 66 (3h18m)
[Scope 2]
Scope: Vixen VSD90SS + V0.71xReducer (fl:351mm, F3.9)
Camera: ZWO ASI6200MM Pro (-10℃), Astrodon tru-Barance Filter
Others: ZWO EAF focuser, ASI AIR Plus-256G(non Dithering)
Exposure: gain100, R:3min x 19, G:3min x 20, B:3min x 20 (2h55m)
(Total:6h13m)
[Shared]
Mount: ZWO AM5N
Guide: QHYCCD miniGuideScope (fl:130mm) + ZWO ASI 120MM-mini
At Yamanashi-Prefecture("Ryunosuke-Lab" The foot of Mt.Fuji), Japan, 2025, 16, Dec.
Processing (Color boost method):
PixInsight, StellaImage10, Photoshop
(No Drizzle, No Noise Reduction, No BXT, No other ganaration AI)
© 2015 Garry Velletri. All rights reserved. This image may not be reproduced, copied, edited, published, transmitted or uploaded in any way without my permission.
Submitted for #FlickrFriday #Building.
Formally opened on November 12, 1971, the Norfolk Scope is an 11,000 seat arena owned and operated by the City of Norfolk, Virginia. It was designed by Pier Luigi Nervi and based upon Il Palazzo Dello Sport in Rome. It is used for sporting events, concerts and more.