Deep Sky Astrophotography

telemaq76

EOS 80D
Jan 16, 2014
179
1
500px.com
finally a clear night, i mean 4 clear hours, those nights are the shortest of the year ,and it was full moon,
then best target was M13 i guess
120 subs 60 secondes, 25 darks, 15 flats, 200 offsets



with my canon 700da+500 4 is , neq6 pro
 

jrista

EOL
Dec 3, 2011
5,341
23
jonrista.com
Wow! I'm amazed this thread is still going. Glad to see so many of you have gotten into astrophotography. (Heh, it's consumed me for the last few years...went all in on AP, so much so that I sort of wrapped my 600mm f/4 L lens in so much astro-related gear I couldn't really use it for anything else.)

Some nice stuff here, though, guys.
 

Maximilian

The dark side - I've been there
Nov 7, 2013
2,658
473
Germany
Wow! I'm amazed this thread is still going. Glad to see so many of you have gotten into astrophotography. (Heh, it's consumed me for the last few years...went all in on AP, so much so that I sort of wrapped my 600mm f/4 L lens in so much astro-related gear I couldn't really use it for anything else.)

Some nice stuff here, though, guys.
Welcome back, John!

It's been a long time since your last post.
 

jrista

EOL
Dec 3, 2011
5,341
23
jonrista.com
While I don't use Canon cameras anymore, as I switched to dedicated, cooled, mono astro cameras a while ago, here is something to get this thread going again:



HOO-styled blend



SHO-styled blend

"The Great Wall", part of "North America" nebula in Cygnus. A total of 24 hours of integration, acquired with an ASI183MM Pro camera, cooled to -15C, with AstroDon Ha, OIII and SII 3nm narrow band filters. Acquired with an Astro-Physics Mach 1 GTO mount and Sequence Generator Pro for automation.
 

Valvebounce

EOS 5D SR
Apr 3, 2013
4,269
215
52
Isle of Wight
Hi Jon.
As is usual from you, 2 very good shots. For the uninitiated amongst us (me) could you decifer the jargon please, I have no idea to what you refer with all the letters. Thanks.

Cheers, Graham.

While I don't use Canon cameras anymore, as I switched to dedicated, cooled, mono astro cameras a while ago, here is something to get this thread going again:

HOO-styled blend

SHO-styled blend

"The Great Wall", part of "North America" nebula in Cygnus. A total of 24 hours of integration, acquired with an ASI183MM Pro camera, cooled to -15C, with AstroDon Ha, OIII and SII 3nm narrow band filters. Acquired with an Astro-Physics Mach 1 GTO mount and Sequence Generator Pro for automation.
 

jrista

EOL
Dec 3, 2011
5,341
23
jonrista.com
Hi Jon.
As is usual from you, 2 very good shots. For the uninitiated amongst us (me) could you decifer the jargon please, I have no idea to what you refer with all the letters. Thanks.

Cheers, Graham.
Thanks, Graham!

For the acronyms, HOO stands for Hydrogen/Oxygen/Oxygen, or Ha/OIII/OIII. It is a particular kind of narrow band blend that gives a "natural" look from a color standpoint (hydrogen gas to reddish or pinkish, oxygen gas to a blue or cyan.)

SHO stands for Sulfer/Hydrogen/Oxygen or SII/Ha/OIII. This is another kind of narrow band blend that is definitely "false color" in that hydrogen-alpha, which is definitely a red emission, is mapped to green. This is also sometimes called the Hubble Palette, as it is the standard blending palette often used for official hubble image reproductions.

The underlying data here is the same...I've just blended the information in different ways to give it a different look.