I recorded a 4 hour time lapse of the moon to show how the shadows change along the lunar terminator. The lunar libration was enough to create a 3D stereo image to see the shape of the moon and the terrain. Be sure to check it out if you have 3D glasses or a VR headset! #VR youtu.be/vtygobDfPZ0

C/2025 A6 Lemmon tonight

Flight 11 Starship from the ground and from the vehicle itself. Note that you can see the same "pleated" effect on the exhaust in both pictures. Ground picture is a single frame from the Blackmagic camera on an 11" Celestron NexStar GPS telescope. #spacex #starship

Here is my 4K telescopic tracking footage of #SpaceX Starship from Florida during flight 11 last night! youtu.be/Kspmn3YUqpI The vehicle and exhaust were illuminated by the sun while twilight was fading here in Florida, the perfect timing for a gorgeous "jellyfish" effect!

#SpaceX Starship engine shutdown as seen with an 11" Celestron NexStar GPS in Florida tonight. Full 4K video coming soon.

Thank you to @flightclub.io for your trajectory data that enabled me to track Starship during a beautiful sunlit launch as twilight faded here in Florida! 4K footage coming soon!

Fantastic work here putting together the data from Perseverance of 3I/ATLAS.

Just got my negatives back from my latest roll of manually guided film astrophotography. For some reason trying to post these pics on the bird app got my account locked and labeled for "inauthentic behavior." Hard to get more authentic #astrophotography than manually guided #film.

By combining old tech (film, manual guiding) with new techniques and tech (bracketing exposures for HDR, AI denoising, generalized hyperbolic stretching), I was able to produce this film HDR of Orion and the Running Man by combining 60 minute and 10 minute exposures. #astrophotography #filmisnotdead

Here are the scans of my latest film photos! This was my first roll testing an off-axis guider for guiding through the same scope as the camera. Andromeda was a 30 min exposure and Orion was a 1 hr exposure, all manually guided so I'm really happy with these results! #astrophotography #filmisnotdead

The comet I discovered in 2016 has been listed by viral sensationalist videos claiming an "unprecedented" swarm of comets is sweeping through the inner solar system and might even be dangerous. In this video I set the record straight: www.youtube.com/watch?v=XpFs... #astronomy #comets #swarm #414P

Here is a 25 frame stack of the comet I discovered using NASA's STEREO spacecraft. I discovered this comet on the opposite side of the sun in 2016 before it could be seen from Earth, and now I've captured it with my 11" SCT and Canon 90D, aligning these frames with my own Python code. #astronomy

On Sunday, I captured SpaceX's launch of NG-23 all the way to first stage landing in one continuous shot with what may be the cheapest, worst telescope ever to pull off a launch to landing shot, using predictive tracking with my RocketTraker software. youtu.be/urBONk04usQ #spacex #astronomy #space

Sunday morning I was able to capture the comet I discovered with NASA's STEREO spacecraft back in 2016. It was faint and only 14.75° above the horizon, but my 11" Celestron NexStar GPS and Canon 90D were able to get it done. This is a quick and dirty stack by hand, I'll be redoing it. #astronomy

I don't generally post about politics, but space deniers are sometimes violent people who will use any excuse for violence. Political violence is unacceptable, death threats are unacceptable, and if anyone tries to kill me, I will defend myself if at all possible. #kirk

It was extraordinarily faint and just barely detectable through a ton of moonlight this morning, but in the middle of the circle is the comet I discovered in 2016, 414P! Other amateurs have recently spotted it as well as it approaches perihelion: www.aerith.net/comet/catalo... #Astronomy #414P

I recently measured the distance of Barnard's Star using parallax, but I also showed Earth's orbital motion in a different way. I'm open to being corrected, but as far as I know, this is the first time an amateur has demonstrated velocity aberration. youtu.be/uRrkuBW3R58 #astronomy #relativity

Flight 10 completed a successful flight! x.com/SpaceX/statu... Unfortunately I couldn't track this one from Florida due to rain only 30 minutes prior to liftoff, but there will be more opportunities in the future.

Here is my 2.5 hour time lapse of Titan's shadow transiting across Saturn on August 19th! The mp4 video from the Blackmagic camera was aligned to compensate for field rotation and stacked with custom Python software. youtu.be/kXkYJNA-fXY #astronomy #astrophotography #Saturn #Python

On Saturday morning I was able to track an 80° pass of ISS and wave to #RupertInSpace and the rest of Expedition 73 as ISS flew over Cape Canaveral. Be sure to check out the 4K video of the pass! youtu.be/QicKrVMPr70?... #ISS #NASA #astronomy #astrophotography #satellite

The comet I discovered in 2016 using STEREO Ahead, originally designated P/2016 J3, now designated 414P/STEREO, has been recovered by the Calar Alto observatory on July 28th! I'll be taking my own follow up observations as soon as possible! www.minorplanetcenter.net/db_search/sh... #astronomy #comet

Here is a time lapse of the interstellar comet 3I/ATLAS recorded with my 8" LX200. The comet is about magnitude 17, right at the limit of what my scope can capture with these 60 second exposures. These images were recorded using an SBIG ST-2000XCM with 2x2 binning and an AO-7. #astronomy

3 hours of light on Stephan's Quintet processed in GraXpert and Siril. 8" Meade LX200 classic with an SBIG ST-2000XCM and AO-7. AI background extraction, denoise, star removal and recombination. #astrophotography

NGC 3628 processed in GraXpert and Siril. 1 hour and 45 minutes of light stacked in Deep Sky Stacker. 8" Meade LX200 and SBIG ST-2000XCM with an AO-7. #astrophotography

Here's a GraXpert and Siril reprocessed version of my Orion nebula data with the SBIG and AO-7 from 2021, using AI background extraction, denoising and star removal/reintegration. #astrophotography

Here's a GraXpert and Siril re-processing of M101 using AI background subtraction, denoising, and StarNet separate processing of the galaxy and the stars. The 6 hours of light in this stack come from 2023 during the SN 2023ixf supernova, hard to believe it's already been 2 years! #astrophotography

I've been bitten by free AI processing tools that are out there now for astrophotography. Here's 4.42 hours of my best light on M51, processed in GraXpert and Siril, using AI background subtraction and denoising, stretching a starless version of the image separate from the stars. #astrophotography

I finally got around to processing additional exposures I had taken of the Whirlpool galaxy in late May. Stacking it with exposures taken earlier in April as well as exposures taken at the same focal length back in March 2017, I was able to produce this 6.5 hour stack. #astronomy #astrophotography

Fred Espenak has sadly passed away at the age of 71. www.space.com/stargazing/f... He worked with Jean Meeus in producing the Five Millennium Canon of Solar Eclipses. He also wrote "Elements of Solar Eclipses," a book I own and referenced in a video about Besselian elements youtu.be/AiYs59nHBMg?...

My latest batch of film astrophotography! These were all shot on Amber T800 film using my Orion ST-80 refractor or my 8" Meade LX200. #filmisnotdead #astrophotography

Twitter locked me out of even receiving DMs on both my main and alt accounts, on both mobile and desktop. They recently banned Sudoer for posting leaked info from SpaceX, I made the mistake of mentioning my buddy @redsrhetoric.bsky.social's previous issues with them. Think someone got trigger happy.

Alan Vs @astronomylive.bsky.social debate... Live on @redsrhetoric.bsky.social www.youtube.com/live/qX9WYvK...

I used my homemade planetarium code to render the strength and direction of stellar aberration's effect on right ascension and declination coordinates. For the legend in the top right, RA is the X axis and Dec is the Y axis. #python #astronomy

Here's my latest stack of the Whirlpool Galaxy, combining images from Thursday night's webcast with images I took with the SBIG ST-2000XCM and AO-7 at the LX200's native focal length back in 2017 for a total of 5 hours and 20 minutes of light on this magnificent spiral galaxy. #astrophotography

This year marks 25 years that I've been doing astrophotography, so I decided to come full circle and try my hand at capturing space the way I did when I started. On film! youtu.be/PuPMSTJlEuM

1 hour manually guided exposure of the flame and horsehead nebula on Amber T800 film using an Orion ST-80 piggybacking on a polar aligned LX200. #filmisnotdead #film #astrophotography

#flatearth #fram2

Fram2 as it flew over Florida this morning. Captured with an 11" Celestron NexStar GPS using my RocketTraker software and a Blackmagic Pocket Cinema 4K at f/10.

Just finished manually guiding the telescope on the Horsehead nebula for an hour while shooting film. Very old school, but I'm enjoying the challenge. Almost done filming segments for a video about my return to film astrophotography. #astrophotography #filmisnotdead

I just released the latest version of RocketTraker, now with pointing error mapping, CPWI compatibility, and more for ASCOM-compatible alt/az telescopes! Be sure to check out the new tutorial video as well! youtu.be/Bwa8O2G2joE #astrophotography #space #rockets #launch

New version of RocketTraker coming later this week. I just need to add some safety features like slew abort capability. New features include pointing error mapping, CPWI compatibility and prediction lock mode. Very excited to get this version into everyone's hands.

Here's a stabilized version of my footage of the Starship IFT-8 failure, tracked using my 11" telescope in Florida. youtu.be/NVO1CjFRWY8 #astrophotography

Here's my view of the IFT-8 Starship failure filmed with telescopes from Florida using my custom RocketTraker software! youtu.be/DhXZAJA0TZk

Question for @piratelawyer.com, would Twitter be relinquishing their safe harbour protections by blocking my account from being able to file a DMCA takedown request for stolen videos of mine that are posted directly on their platform?

My telescope is aligned, focused and ready to track Starship as it flies past Florida minutes after launch this evening. I've mapped the telescope's pointing error along the expected trajectory using my open source RocketTraker software. I'll be tracking Starship using FlightClub.io trajectory data.

I was able to track some part of the IM-2 mission headed towards the moon tonight, probably the spent upper stage tumbling and catching the sunlight. Very cool to see. #astrophotography #nasa #IM-2 youtu.be/s2RdhDfSHg4

Here are my latest deep space photos taken on film! Two of the photos are 1 hour exposures using an Orion ST-80, manually guided. The other Orion nebula photo was an autoguided 5 minute exposure through a polar aligned 8" LX200 classic. #filmisnotdead #astrophotography #analogphotography

Raw scans of my latest film photos of the Orion nebula. One is a one hour manually guided exposure through an achromatic refractor, the other is a 5 minute auto guided exposure through an 8" LX200 classic. I'll upload processed versions later. #filmisnotdead #analogphotography #astrophotography

Shot two hours on film last night the old fashioned way. Manually guided with an illuminated reticle eyepiece. Not really a proper guiding eyepiece, so I tried to keep the star tight in the corner of the crosshair. Hopefully this roll turns out!

Nazi officer swords brought back as trophies by my Grandmother's first husband. He served with the 82nd armored reconnaissance battalion and was honorably discharged in 1945 after Germany surrendered. He died a few years later, she married his best friend who tried to save his life, my grandfather.