ryderdavid πŸ”­πŸš²πŸͺπŸŒŒ

333 Followers
113 Following
346 Posts

Dad to a toddler with a strong breakfast throwing arm. Amateur astrophotography from the skies over Arizona 🌡

Gear:
πŸ”­ 1: Astro-Tech AT72EDII
πŸ”­ 2: Samyang 135mm f/2 lens
πŸ“· 1: ZWO ASI533MC Pro
πŸ“· 2: Astro-Modded Canon 450D DSLR
πŸ—»: ZWO AM5 Harmonic Drive Mount

Work stuff over at https://fosstodon.org/web/@ryderdavid (cloud data sci/eng)

@jdlbt this is great to hear! Now that I’ve put a half year in in my new Arizona home, and having (extensively) looked at weather trends for each season, I was sad to realize that we have awful cloudiness (at least for astronomy) in summer β€” that I remembered β€” but also winter, leaving fall and (eek) galaxy season. Finally realized if I don’t want to be out of luck for half of my good weather in the year, I need reach for galaxies. Should be plenty to shoot at 518/600 (depending on corrector)
@jdlbt I’ve heard horror stories about collimating and light leaks, but it might be more appropriate for galaxy season under light pollution than an SCT at f/8 even after using a reducer. Still pondering!
@jdlbt I really like the hyperstar! It’s incredible once you get it figured out. A little temperamental but then all fast optics are.
I’m not sure I’m going to keep it, just because at 300mm it is kind of in a weird place reach wise compared to my 135mm samyang lens. If I want Widefield, I’m always going to want to go wider; if I want reach, I feel like I need more than this. I’m debating selling it in favor of working to tame a fast Newtonian at 600mm focal length
Hi! Long time no see. Finished a project I’m pretty proud ofβ€”14 hours on IC 63, the Ghost of Cassiopeia. 4 hours shot in the total dark at the Tucson Amateur Astro Assoc’s Chiricahua Astro Complex in far southeast Arizona, the other 10 shot in narrowband in my Phoenix backyard, on a Hyperstar C6 rig, with an ASI533MC Pro. Really proud of how I kept Gamma Cassiopeiae under some degree of control at least by hyperstar standards. #astrophotography #astrodon
@noom if / when you're buying I really like the Hyperpod 135 on Etsy. Astrodymium is I guess more popular, but if you’re using an EAF, the belt system it has makes it super tough to rotate for framing. The Hyperpod uses a gear ring that you can kind of just slide up to rotate, then when happy slip back down onto the EAF's teeth. Works great on my Roki cine

JWST is a fancy telescope designed for science. So while it can produce very beautiful images, it's not quite a point-and-shoot camera.

Here is an image of the Pillars of Creation that I downloaded from the MAST archive. Notice how all of the stars have black centers? That's not what the stars actually look like β€” it's an artifact introduced by the NIRCam detector.

A 🧡 on #JWST image artifacts.
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Learn more: https://webbtelescope.org/contents/articles/how-are-webbs-full-color-images-made

#astronomy #Space #Astrodon

How Are Webb’s Full-Color Images Made?

Learn how the James Webb Space Telescope’s full-color images are processed, and why it takes time to refine and release them.

WebbTelescope.org

@noom mosaics are so exhausting! the one i did with my scope drove me to buy a wide lens so I don't have to hurt myself again

Still, looks great! broadband shooting is so much more tough!

@jdlbt @walker I’m hopeful that with enough exposure I’ll be able to overcome the much lower QE of the dslr and maybe maybe pick up the Witch’s Head near Rigel too.
@jdlbt as far as this too, star reduction and removal is such a crucial piece of my toolkit. Shooting stars later at a much slower f stop and using starxterminator and blurxterminator saves me a ton of energy from having to have micron level accuracy on the back focus. Such useful software!

@jdlbt @walker meanwhile, shooting this region makes me want even MORE range, eyeballing a 2600! πŸ€¦β€β™‚οΈ

Will try out my dslr in the winter on an ultra wide mosaic of Orion!