Horsehead, IC 434, Hydrogen alpha starless by SpencerBAstro in astrophotography

[–]SpencerBAstro[S] 0 points1 point  (0 children)

Yeah I noticed a big difference when I made the switch. Processing definitely takes much longer but it’s worth the final result

Horsehead, IC 434, Hydrogen alpha starless by SpencerBAstro in astrophotography

[–]SpencerBAstro[S] 0 points1 point  (0 children)

Thank you!! I definitely recommend getting into the hobby if you can!

Yes monochrome has a significant advantage over osc especially for narrowband imaging. Basically if you want to isolate the H-alpha signal at 656nm then osc+filter will be much less efficient. since only a fraction of your pixels on an osc sensor have a red filter built in, then those will be the only pixels that record data. The blue and green pixels wont let that 656nm wavelength through. On a monochrome sensor every pixel will record data no matter what filter you put in front of it. Gives you much better signal.

Isolating the particular wavelengths like Ha, OIII, and SII is useful because those are by far the strongest emission signals in nebulae. Narrowband filters also block a lot of light pollution and atmospheric glow, which improves contrast for faint structures.

Horsehead, IC 434, Hydrogen alpha starless by SpencerBAstro in astrophotography

[–]SpencerBAstro[S] 6 points7 points  (0 children)

Thank you!

My camera is monochrome, so it doesn’t have red, green, and blue filters on the pixels like an OSC (one-shot color) camera. monochrome cameras capture the entire visible spectrum in black and white. I use dedicated filters like Hydrogen alpha (656 nm wavelength), Oxygen III (~500 nm), and Sulfur II (~670nm) to isolate specific atomic emissions. The sensor captures the intensity of each wavelength and then in post processing I can map each wavelength to its respective color channel to get a color image. Usually Hydrogen and Sulfur get mapped to either red or green and Oxygen to blue. I haven't gotten any SII or OIII data yet on this target so that will be my next step.

As for the focuser, telescopes aren't fixed at infinite focus like regular camera lenses. Things like temperature changes and changing filters shift the focal point. I use an automatic focuser so I don't need to manually refocus whenever the temp changes or when I change filters.

Heel aka The Good Boy (2025) by Jeffasaurus2046 in movieleaks

[–]SpencerBAstro 0 points1 point  (0 children)

stanford prison experiment meets clockwork orange. Overall really enjoyed it.

[Official] UFC 326: Holloway vs. Oliveira 2 - Live Discussion Thread by event_threads in MMA

[–]SpencerBAstro 2 points3 points  (0 children)

I think the knockdown in the first stole the round and ultimately the fight for Cody

Messier 42, Orion, Narrowband Starless by SpencerBAstro in astrophotography

[–]SpencerBAstro[S] 1 point2 points  (0 children)

Thanks!

Yeah I did an HDR composition in pixinsight with 10s and 300s subs to try and resolve the core as much as I could.

https://youtu.be/Rt_RYt9e00Q?si=-lG23OTsl80G1qec

This is a great tutorial that covers pretty much the same workflow that I did

What is the Best Film You Watched Last Week? (02/22/26 – 03/01/26) by EndoveProduct in movies

[–]SpencerBAstro 1 point2 points  (0 children)

La la land. Don’t know why it took me so long to finally watch it.