ICEINSPACE
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Moon Phase
CURRENT MOON
Waxing Gibbous 85.6%
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11-10-2008, 08:24 PM
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Always looking up
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Join Date: Jan 2007
Location: Wollongong
Posts: 730
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Great capture Greg...I hope your so proud of this one.
Just beautiful!
Paul
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11-10-2008, 08:52 PM
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Widefield wuss
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Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,994
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the fine detail in and depth of the image are fantastic. The area between M42 and M43 is great.. I very much look forward to a megadata mosaic...
Should I get EQMOD going in the next few months I was hoping to do a mosaic of M42 myself...
May I ask, How much exposure time classifies an image as 'Megadata'
Given some clear nights I would like 9 - 10, possibly 20hrs of data in this area...
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11-10-2008, 09:43 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by AlexN
the fine detail in and depth of the image are fantastic. The area between M42 and M43 is great.. I very much look forward to a megadata mosaic...
Should I get EQMOD going in the next few months I was hoping to do a mosaic of M42 myself...
May I ask, How much exposure time classifies an image as 'Megadata'
Given some clear nights I would like 9 - 10, possibly 20hrs of data in this area...
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Yes that is the sort of time frame I was thinking of. 10 - 20 hours.
A mosaic probably would take 4 frames of about 2 hours each for Ha LRGB minimum. I wanted to go deep on Ha so perhaps more.
Greg.
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11-10-2008, 10:56 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,429
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wow - that is some imaging!!
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12-10-2008, 12:17 AM
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Widefield wuss
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Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,994
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mmm My plan is 12hrs Ha, 13hrs color... equal amount of 15, 10 and 5min subs for Ha and color, half an hour of 1min color subs, and half an hour of ~20/30 second subs. to tame the trap....
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12-10-2008, 01:39 AM
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Moderator
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Join Date: Aug 2005
Posts: 26,644
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Lovely images Greg with strikingly beautiful colours.
Well done.
Quote:
Originally Posted by AlexN
mmm My plan is 12hrs Ha, 13hrs color... equal amount of 15, 10 and 5min subs for Ha and color, half an hour of 1min color subs, and half an hour of ~20/30 second subs. to tame the trap....
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Interesting, on a mammoth proportion.
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12-10-2008, 09:17 AM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by AlexN
mmm My plan is 12hrs Ha, 13hrs color... equal amount of 15, 10 and 5min subs for Ha and color, half an hour of 1min color subs, and half an hour of ~20/30 second subs. to tame the trap....
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Orion Neb isn't that pretty really in Ha it is more the surrounding areas that look great in Ha. It brings those gassy/dusty areas up and the extent of it becomes clearer. M42 itself isn't enhanced much by adding Ha.
Greg.
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12-10-2008, 09:41 AM
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Highest Observatory in Oz
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Join Date: May 2006
Location: Canberra
Posts: 17,691
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Quote:
Originally Posted by gregbradley
Thanks.
I think I left a bit in this image.
I did some more work on it.
Do you think this is an improvement? It is brighter and sharper.
The depth of the data is remarkable for only 1 hour and 50 minutes. Gotta love F5.
http://www.pbase.com/gregbradley/image/104365325
Greg. |
Yeh that's excellent 
I love seeing all the surrounding dust.
The trap region looks a bit wonky though, another hash at that might be worth considering..?
Fantastic outfit you have though Greg, I, like many others here I'm sure, am suitably jealous 
Mike
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12-10-2008, 06:17 PM
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Widefield wuss
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Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,994
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Quote:
Originally Posted by gregbradley
Orion Neb isn't that pretty really in Ha it is more the surrounding areas that look great in Ha. It brings those gassy/dusty areas up and the extent of it becomes clearer. M42 itself isn't enhanced much by adding Ha.
Greg.
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Interesting to know... I'll keep that in mind, and maybe bring it down to 2 - 4hrs Ha and the rest in color...
HaHa(R+Ha)GB was the plan..
Any ideas on better ways to use the data?
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12-10-2008, 06:54 PM
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Quietly watching
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Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
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very nice, the dust detail between m42 and the running man is superb. be interesting to see what you think you can do to improve it.
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12-10-2008, 08:47 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Quote:
Originally Posted by AlexN
Interesting to know... I'll keep that in mind, and maybe bring it down to 2 - 4hrs Ha and the rest in color...
HaHa(R+Ha)GB was the plan..
Any ideas on better ways to use the data?
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Depends on what you are imaging with. A slow scope will require longer exposure time.
This is the sort of thing I was referring to that I plan to shoot. 4 panel mosaic with with the Apogee U16M camera which has twice the FOV of this shot taken with an STL11. So 4 panels should hopefully cover the whole sword area.
http://www.pbase.com/gregbradley/image/99385463
Ha brings out the dust and area around the Horsehead. M42 itself when blended with Ha tends to make the neb look too red and lose its bluish/pink tones.
Greg.
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12-10-2008, 10:01 PM
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Widefield wuss
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Join Date: Mar 2008
Location: Caboolture, Australia
Posts: 6,994
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all food for thought... I could probably fit that much sky into 3 or 4 panels.... I'll be imaging with the M102, F/6.8.. so neither fast nor slow really.. Sorry if this is cluttering your image thread, but I'm trying to get a better understanding of the area so as to plan my image for best results.
Does Orion respond well to OIII or SII? the reason I ask this is that from my light polluted hell, I'd be able to capture as many hrs of narrowband as clear skies allow. Then go for the color data from a dark site during the new moon.. The narrowband information would really only be used as a luminance.. perhaps OIII blended into the blue channel..
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14-10-2008, 10:36 AM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Hi Alex,
This image I took a year or two ago has Ha O111 LRGB and may even have a touch of S11 in it.
http://www.pbase.com/gregbradley/image/66499144
The violet glow comes from the O111. I am not sure I like that effect particularly in hindsight.
The Ha adds the deeper reds in the neb itself plus the background gas/dust areas like this:
http://www.pbase.com/gregbradley/image/93698947
Although I may not push the red so hard and leave it looking more dusty than deep red.
So I plan a couple of hours each HaLRGB, 4 panel mosaic of the area widefield at F3.64 with the FSQ106EDX and reducer Apogee U16M.
Greg.
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14-10-2008, 07:07 PM
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Craig
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Join Date: May 2007
Location: Adelaide, South Australia
Posts: 558
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Awsome images Greg. Love those mosaics.
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14-10-2008, 10:31 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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Thanks Craig. They are all single images - no mosaics. A mosaic is something I plan with a similar setup to get the whole area.
Greg.
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15-10-2008, 09:49 AM
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Craig
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Join Date: May 2007
Location: Adelaide, South Australia
Posts: 558
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My mistake Greg. So what scope or lens were you using? Checked with your website but couldn't find the info. Saw your fabulous closer shot of the Horsehead and the widefield of the Triffid, Lagoon area. Wonderful. Craig
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15-10-2008, 04:16 PM
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Registered User
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Join Date: Feb 2006
Location: Sydney
Posts: 18,185
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The wide field shots were taken with a Takahashi FSQ106EDX with an F3.64 reducer and an STL11 camera. A really nice setup.
Greg.
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