Sh2-129
Oct 24, 2018 16:15:29 #
Sh2-129 is a pretty hydrogen rich bright nebula. Easy to photograph.
The last two nights were pretty decent for narrow band imaging. The moon was very close to my target so the signal got some it it's influence but considering it's limanosity all went well.
The lights were 120 seconds 1x1 Bin. I took 50 each of Oiii, Ha, and Sii. The stars were 3 second exposures I used 15 each of R, G, and B. Processed both the nebula and stars in PixInsight then blended them in PS.
30 darks, 100 bias, and 90 flats (30 for each of the NB filters)
ASI1600MM-C camera cooled to -20c. Astronomik Filters 6nm.
Widefield Stellarvue 70T, .8 reducer for 336FL. Atlas Pro EQ/AZ Mount.
It was good to get out - cool and crisp skies last night. But rain is coming for the next 4 days!
The last two nights were pretty decent for narrow band imaging. The moon was very close to my target so the signal got some it it's influence but considering it's limanosity all went well.
The lights were 120 seconds 1x1 Bin. I took 50 each of Oiii, Ha, and Sii. The stars were 3 second exposures I used 15 each of R, G, and B. Processed both the nebula and stars in PixInsight then blended them in PS.
30 darks, 100 bias, and 90 flats (30 for each of the NB filters)
ASI1600MM-C camera cooled to -20c. Astronomik Filters 6nm.
Widefield Stellarvue 70T, .8 reducer for 336FL. Atlas Pro EQ/AZ Mount.
It was good to get out - cool and crisp skies last night. But rain is coming for the next 4 days!
Oct 24, 2018 16:39:56 #
Beautiful Ed!
Yep, we can't change the weather.
Shooting beyond the moon is amazing.
I never would have imagined it, until I did it.
But I still tend to look for Northward targets when Old Man Moon is glaring away.
Unlike the damned weather, the Moon is predictable.
Stellarium comes up with "Flying Bat Nebula".
That reminds me of my first ex-wife. The flying bat part....
Yep, we can't change the weather.
Shooting beyond the moon is amazing.
I never would have imagined it, until I did it.
But I still tend to look for Northward targets when Old Man Moon is glaring away.
Unlike the damned weather, the Moon is predictable.
Stellarium comes up with "Flying Bat Nebula".
That reminds me of my first ex-wife. The flying bat part....
Oct 25, 2018 15:11:07 #
nikonshooter wrote:
Sh2-129 is a pretty hydrogen rich bright nebula. ... (show quote)
Great result! What channels did you assign your Ha, Oiii & Sii to?
bwa
Oct 25, 2018 15:31:03 #
bwana wrote:
Great result! What channels did you assign your Ha, Oiii & Sii to?
bwa
bwa
SHO ....I really need a lot more OIII to see the squid ......it is feint and a challenge to image. So far it has beaten me. When I get a clear night....I plan to add 30 5 minute exposure of OIII to see if that makes a difference. My astro mentor gave me that advice.
Oct 25, 2018 22:34:14 #
nikonshooter wrote:
SHO ....I really need a lot more OIII to see the squid ......it is feint and a challenge to image. So far it has beaten me. When I get a clear night....I plan to add 30 5 minute exposure of OIII to see if that makes a difference. My astro mentor gave me that advice.
Every extra photon helps!
bwa
Oct 26, 2018 09:58:44 #
bwana wrote:
Every extra photon helps!
bwa
bwa
You are right about snaring photons. I am real curious though if longer exposures and more of them in Oiii will deliver the squid using the ASI1600MM-C. Comparatively speaking it is a low end camera with limits. My plan when I imaged this was to get the squid ......I had seen others do it on Astrobin with similar settings (but not with the ASI1600MM-C). But more than likely it is me, the photographer.
Other astro imaging friends are telling me it is a real challenge to pull out because it is so feint.....and to ramp up the exposure times along with more COWBELL - had to write that - more OIII. So that i will try.
I hope some of the HOGS give it a go. I would like to see someone get it.
Oct 26, 2018 13:09:55 #
nikonshooter wrote:
You are right about snaring photons. I am real c... (show quote)
I'd like to give it a shot and see what my pea shooter might pull out.
I just have to find a night where I either don't have to get up at 3 or 4 AM, or do pick-ups at 11:30 PM halfway to hell and back.
Whine, whine, whine....
Oct 26, 2018 14:29:57 #
Just got an email from John Rista (very schooled with this camera) he said to stay with the 3 minute exposures but that i needed at least 12 hours of total exposure time. I have 5 hours invested with 2/3rds of it in Ha and SII (both highly influence the red channel) so I am thinking about adding 5 hours of OIII and see what happens. I don't want to waste more than one more night on it....but if that extra 5 hours starts to pull it out.....I may add another night of OIII.
The fun is in the planning and trying!
The fun is in the planning and trying!
Oct 26, 2018 14:40:17 #
nikonshooter wrote:
You are right about snaring photons. I am real c... (show quote)
Imagers have captured the squid with a DSLR, so it can be captured with the ASI1600MM. Just be prepared to shoot 20 hours or so of 10-20 (even 30) minute Oiii subs!
When I get a reasonable evening I may give at least the Ha portion of the target a shot BUT I don't see myself shooting 10-30 minute subs of anything! I'm more of a 1-2 minute sub shooter...
Sharpless 129: RA=21h 11.748m, Dec=59° 57.683'.
Enjoy!
bwa
Oct 26, 2018 14:44:45 #
bwana wrote:
Imagers have captured the squid with a url=http:/... (show quote)
Yep...just gotta add "more cowbell"
Nov 7, 2018 09:21:46 #
Nov 7, 2018 11:50:45 #
Well Ed,
I gave it a go, and whata Ya know?
I got spot on and tried time and time again so,
Then realized when comparing, the folly I faced,
My pea shooter is fine for the smaller anomalies,
But for something this big I really miss the mark,
The bright nebula completely escapes,
And all I get is a dark fart.
I gave it a go, and whata Ya know?
I got spot on and tried time and time again so,
Then realized when comparing, the folly I faced,
My pea shooter is fine for the smaller anomalies,
But for something this big I really miss the mark,
The bright nebula completely escapes,
And all I get is a dark fart.
Nov 7, 2018 13:40:39 #
SonnyE wrote:
Well Ed, br I gave it a go, and whata Ya know? br ... (show quote)
You got the key stars which are also in the dimmest part of the nebula. All you need is a somewhat wider telescope/lens...
bwa
Nov 8, 2018 09:51:25 #
bwana wrote:
You got the key stars which are also in the dimmest part of the nebula. All you need is a somewhat wider telescope/lens...
bwa
bwa
Much wider....
If I was to really try, I could mount my DSLR, which takes really wide field images.
Just not sure it could handle my abuse.
Besides, I'd rather look at Ed's pictures.
Nov 9, 2018 17:43:41 #
I'm sure glad you got out that is awesome Ed , I'm getting clouds and rain and it's making my condition worse. I wish I could finish up on Andromeda , all I need is to shoot the green channel again before moving on .
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