Astrophotography: 66 hours of Ha, Oiii & LRGB on the Triangulum Galaxy!

[@AZ4Runner]

next level stuff James!!! soo good! happy Holidays & CS!

[@DSOImager]

Thanks Jason! Happy Holidays!

[@Rafastro]

You got all that detail from a 115 refractor!!! I thought it would be like a C14 or something😳 Juice by James!

[@DSOImager]

LOL! Yea.. the 115 refractor.. but I did drizzle so that helped :)

[@petesastrophotography]

Liking this a lot James. I spent a good while looking at all the nebulae in the full resolution version on Astrobin. 66 hours is definitely a commitment👍

[@DSOImager]

Thanks Pete!

[@LogansAstro]

Fantastic Image James and great tutorial. The detail in the regions of nebulosity is amazing and I love the fact that you have been able to show the difference in the OIII and Ha dominant areas in those nebulae. Well worth the 66 hrs I'd say.

[@DSOImager]

Thanks Logan! 😊

[@doubleehokie]

I'm doing M33 with my edgeHD 8 and 0.7 reducer, hadn't thought about doing O3, but will now! It's crazy how populated M33 is in general, but especially when compared to M31.

[@DSOImager]

Nice, do it! I shot m33 with my edge8 last year, but didn't get the o3.

[@elbass0]

That's one epic image. Well done James.

[@DSOImager]

Thanks Justin!

[@mirkotondinelli8526]

Thank you for this video of yours. The steps with Pixelmath to merge the Ha and O3 signal are interesting. Thanks again

[@DSOImager]

You are welcome. Thanks for the comments 🙂

[@Jcastleinfo]

Did you see the NB Colour Mapper talk on The Astro Imagining Channel? Adam Block does something similar to subtract the red channel continuum data from the Ha but using this new script. The real time preview really helps to tweak some of those numbers. You're not nuts doing 66 hrs. The image looks amazing and supported a wonderfully educational talk !! I've got about 50 hrs on M33 (only 16 in Ha) and studying how to combine it right now. I might need to try and get some more Ha and now Oiii if there's time left for M33.

[@DSOImager]

Thank you! I saw it, but did not watch it. That is cool that there is now a script for this process.. I will have to check it out. Thanks for sharing that :) That is a good chunk of data you got on M33... try for some Oiii if possible.

[@Jcastleinfo]

@@DSOImager I just happened to be watching the talk on the train home today and then saw your video too. I wasn't that interested in wacky color assignments but was a bit blown away to see how Adam used it on M33 for the Ha, then your video popped up a few hrs later. TBH, I didn't plan to get so much data on M33 but was too busy to think about anything else and didn't want to waste a string of good evenings so I kept kept running the same series until clouds rolled in :)

[@michaelasbury5473]

Wow! Love it!

[@DSOImager]

Thanks!

[@FedericoLuciani61]

Oh my God, this Is Simply the Top. Mu compliments.

[@DSOImager]

Thank you!

[@actudoran]

merry Christmas J! 🎉🎉

[@DSOImager]

Thank you, merry Christmas!

[@Dionaeatrap]

Fantastic shot and tutorial! Thank you. Ive had a heck of a time finding info on adding Ha&Oiii to galaxies till now. Tho I shoot OSC data and want to add Dual Band data....but I imagine(hope?) I can use/adapt to my setup.

[@DSOImager]

Thanks! Yea.. OSC with dual band data is no problem. What you'll want to do is split your OSC data into separate RGB images (Click on the "split RGB" button on the top pane). Then do the same for the dual band data. Rename the "red" from the dual band to Ha. With the O3, you can either rename the green O3 and toss the blue.. or use pixel math to add green and blue together.. and then name that O3. From there.. the process is identical to processing mono data :)

[@Dionaeatrap]

@@DSOImager Thank you!!

[@jacquesbeauropert]

excellent work😉

[@DSOImager]

Thank you!

[@OlliesSpace]

Very cool James.

[@DSOImager]

Thanks Ollie!

[@realair5472]

Fantastic work! Very inspiring. A thought - I believe I heard somewhere that the 0.2 Factor in the blue channel was to compensate if you did not have any OIII filter (i.e no OIII) data. I believe someone said the the OIII amount is about 20 % o HA. If so, perhaps can you add your OIII data there instead and perhaps can avoid to compensate for the wrong colour in the R channel in the next step?

[@DSOImager]

That is a good idea. I honestly don't remember which values I ended up using but I do believe I increased the red value and added to green. Thanks!