I took this of the Tulip Nebula last summer with my C8 in HaRGB. I was afraid to process it because the collimation was off, and the stars were bloated. After a year, I got some courage, and processed it in Siril, Gimp, AstroSharp and G'Mic. #astrophotography @kat-astro-bot.bsky.social

A fun little short combining #astrophotography and #surfing :) youtube.com/shorts/FtcQ0...

The plane is in freefall, but at least we're still higher than the other planes is certainly a take.

Months in the stars, you spent. Surprised by the light, even experts can be. Useful, this test is for many a sky watcher. Clear data, fewer halos, hmm, the path to better photons it is.

I spent months testing these premium #astrophotography filters. I looked at signal, noise, star halos, contamination from other emission lines and spectrograph tests. The results were surprising at times. youtu.be/ovPAD6M2XNI

I made a free tool to test your #astrophotography filters. All you need is a spectrograph that you can DIY pretty easily! Video below: youtu.be/3dJFAAXuZ6U

Buy a print of this image: www.ebay.com/itm/39808935... I really like this edit. To keep the expenses of my YT channel in check, I've decided to experiment with selling prints. It's an 8.5x11 inch print on premium matte paper. I did the printing myself to ensure quality. There are only 20 for sale.

I had some SHO data from last year that I went back and reprocessed. This is about 15 hours of data, taken with a ZWO 294MM and 80ED doublet. Processed in Siril, Gimp, Graxpert. Forgive me my purple stars. #astrophotography @kat-astro-bot.bsky.social

This is a screenshot of a 5 minute sub in Ha taken with an 85mm lens. It's attached to my ZWO 294MM pro with a special adapter that allows me to control autofocus and aperture in kstars. Can't wait to process this :) #astrophotography

Just thinking about how much time it would take me to get this image from a Bortle 6-7 zone where I live, and I estimate that it would take somewhere between 20-40 hours. And even then, the fainter dust might be unrecoverable. Light pollution is a real pain. #astrophotography.

The Iris Nebula taken from a Bortle 2-3 zone, about an hour's worth of exposure time. Graxpert is putting in a lot of work here. I wish I had more imaging time on the target. ZWO 294MM, Orion 80mm ED Doublet and 0.8x reducer. Siril, Gimp and Graxpert. #astrophotography @kat-astro-bot.bsky.social

Patience, the cosmos teaches. Twisted by its neighbor, NGC 4747 has been, yet beautiful it remains. Fine work this is, and from one hour only, much starlight you gathered.

NGC 4725 is the larger galaxy in the photo below. NGC 4747 is the galaxy in the upper left quadrant, and has been deformed by its larger neighbor. Bortle 3, 1 hour of LRGB data, ZWO 294, 80mm ED Doublet. Siril, Graxpert, Gimp. #astrophotography @kat-astro-bot.bsky.social

Markarian's Chain taken from earlier this year (first is full image, and the rest cropped). It's about 12 hours of total integration time in LRGB (ZWO 294MM, Orion ED Doublet). Processed in Siril, Gimp, Graxpert. #astrophotography @kat-astro-bot.bsky.social

I recently went to a dark site and got Milky Way images with a smartphone, Canon T4I and Canon R8 and just a tripod. I thought I'd make a fun video comparing them. #astrophotography youtu.be/ZwTTx8LrCSI

More photos I took on my recent trip to Chile 🇨🇱 1: Wide shot of Crux, Coalsack, Carina, etc. 2: Closeup on Running Chicken Nebula 3. Closeup on Statue of Liberty Nebula #astrophotography

Strong with the photons, this image is. Untracked, hmm, but guided by patience, it was. Far from perfect, many stars are. Beautiful, it remains.

I tried capturing Rho Ophiuchi untracked with an 85mm lens and unmodded T4i under Bortle 3ish skies to see what I could get. With around 600 5-second exposures, it's far from perfect, but not bad either, imo. #astrophotography @kat-astro-bot.bsky.social Processed in Sequator, Siril, Gimp

I've been trying to find the darkest skies in Florida. This is probably within the top 3. Maybe it's the darkest spot that isn't Dry Tortugas. #astrophotography #milkyway 1st Image: 7 minutes exposure time 2nd Image: 40 minutes Rokinon 14mm Lens, Canon R8 Sequator, Siril, Gimp

Got this picture of a damselfly today. #photography

As Milky Way Season is approaching, just remember that getting into #astrophotography has never been easier. All you really need to get started is a phone and tripod. This video I made last year even gets into stacking and processing. youtu.be/1g7CTZIbs6U

So, I made some improvements to my #astrophotography Sub Frame Calculator related to narrowband and one shot color cameras. The details are in this video: youtu.be/g5hdCV4yFcE

@deepskydetail.bsky.social recently posted a neat tool for estimating minimum sub exposure times. I played around with it and wrote some general thoughts on noise and subs. photonphanatic.com/2026/04/12/a... #astrophotography

M81 and M82 taken from a Bortle 3 location. ZWO 294MM Pro, f/7.5 refractor with 0.8x reducer, about 2.5 hours of data. #astrophotography

Today's #Artemis II launch.

The fixes are now live. The online tool has been updated, and the buymeacoffee links now have correct versions. You can also get them on GitHub: github.com/deepskydetai...

Hi everyone. I just realized there is a bug in the sub-length calculator code. If you're not using unity gain, then the Min.Sub2 estimates will be off (and some others). The Sub Optimization stuff is still correct. But, I'm going to update the app later today and send out a fix. Sorry about that!

Here is the video that explains the #astrophotography sub length calculator: youtu.be/1ABUrerGE54

Basically, you load a dark/bias frame, and a light frame, input your camera's bit-depth, e-/ADU based on gain, and light frame's sub exposure time in seconds, and it does the rest.

I made a sub-frame calculator for #astrophotography. It's available free online. as a Windows .exe or a @siril.org python script. Video out tomorrow. online: deepskydetail.shinyapps.io/Sub_Length_C...) Windows: buymeacoffee.com/deepskydetail/e/524780 Siril: buymeacoffee.com/deepskydetail/e/524785

A fun video about the Running Man Nebula. #astrophotography www.youtube.com/shorts/YHcur...

Got about 13-14 hours of the Soul Nebula over the winter. This is an SHO image, but I used pixelmath to make it more RGB-like. Orion 80ED doublet, ZWO 294MM, various SHO filters I'm testing. I wish I framed it better, but it's difficult without a rotator! @kat-astro-bot.bsky.social #astrophotography

This is about 30 hours of SHO (roughly 10 hours each filter) for the Rosette Nebula. Some people say it looks like a skull, and I can see that too. Rotate the 1st image 90 deg. counterclockwise, and the center of the Rosette is one of the skull's eyes. #astrophotography @kat-astro-bot.bsky.social

I've been slowly getting more data of Orion in SHO the past couple months with various filters. I combined ~30 hours worth of data (12 Ha, 9 in SII and OIII each), processing them in Siril and Gimp. I messed with wavelets too much probably #astrophotography #nebula @kat-astro-bot.bsky.social

This was a fun video I made about last year's lunar eclipse: youtube.com/shorts/iZWYr... #astrophotography

Histograms, despite what you may have heard, can still be used to figure out what a good sub-exposure time is in #astrophotography. There is an argument I've heard that you don't need to pay attention to the left side of the histogram anymore... youtu.be/jVGcG989g9E

I've been messing around with adding low frequency data from my f/2.9 sharpstar to data taken with my f/9 RC for Messier 78 in Gimp using wavelets. I'm not sure what to think, but I kind of like it. What do you think? #astrophotography @kat-astro-bot.bsky.social

I did a quick video comparing two pictures I took of M78. One had 12 hours of data, the other had 23 hours. The 12 hour image had much better SNR. But it lacks something! #astrophotography youtu.be/3wR8A2T7XEM

Let's do this. www.youtube.com/watch?v=KtQ9...

I also did some additional light pollution analyses for my BuyMeAcoffee Members: buymeacoffee.com/deepskydetail/filters-light-pollution-12nm-vs-5nm

Have you ever wondered just how much bandwidth matters? Like, how much more integration time would you need to get the same SNR with a 12nm narrowband filter vs. a 5nm filter? Well, I tested that in my Bortle 6 skies! #astrophotography youtu.be/U9lwAT1ECk0

I made a video about how you can process #Jupiter in Autostakkert and Gimp. #astrophotography youtu.be/C1aOxJOEBjg

Jupiter in Opposition 📸🔭

I made a little YT Short detailing how I created Jupiter's rotation: youtube.com/shorts/ZrbU2... #astrophotography

Here is a timelapse of 40 images of #Jupiter taken with my C8 and 224MC camera from last night. The frames are on the bottom. I started around 10PM and ended around 1:30AM, right after the Big Red Spot's transition. The frame is given in the text. #astrophotography

I have the same bug as Autostakkert. Highlighted in the pic below.

Here is another image of #Jupiter from last night. #Astrophotography. Slowly working on a timelapse. Autostakkert is chugging away in the background!

That looks amazing!!

Looks great!

I am taking a series of Jupiter shots tonight with my C8 with an inexpensive 2x barlow. This is an initial process of one of my first videos. Camera is ZWO 224MC. Hopefully, I can get a nice timelapse. #astrophotography