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astrojase
28-09-2005, 06:53 AM
Yes, another M42...staple of all astrophotographers.

see image for details...

;-)

davidpretorius
28-09-2005, 07:17 AM
Now that is good.

Might be another M42, but I get excited seeing every single one!

Each is different!

Have you got a higher resolution version on the net somehere?

If not zip it up and email to me and i can post the high res on my website for others to grab.

davidpretorius
28-09-2005, 07:20 AM
also, can i have your permission to have a play with the image?

astrojase
28-09-2005, 07:42 AM
pm me your email address and I'll send you the high res un-processed version.

atalas
28-09-2005, 09:33 AM
Looks good astrojase !


Louie :thumbsup:

ving
28-09-2005, 09:36 AM
hey! great one! :D
lotsa fine detail there. m42 truely is brilliant to behold!

astrojase
28-09-2005, 10:00 AM
I had another go at the original image (see attached).

See what you can miss if you over process..! I thought it was grainy, but then rubbed my eyes and looked again!

Cranked the saturation level and tweaked the histogram and came up with this...lol...

ving
28-09-2005, 10:03 AM
thats actually quite interesting. :)
near the "mouth" of 42 would that be dust or some such object to make it black while everywhere else is red?

astrojase
28-09-2005, 10:22 AM
Ving - As an emission nebula, most of what you see is radiated from the nebula – although parts of it are also reflected…dark gas lanes (some say dark nebulae) separate de Mairan’s from the main area – as for the shape and dark areas in the mouth, as far as I know, simply turbulent clouds of gas and dust…

asimov
28-09-2005, 03:13 PM
Nice shots astrojase.

Itchy
28-09-2005, 11:16 PM
Nice Image with the Pentax. :thumbsup: Would you believe that this is the first Pentax Astro image I have seen!
It appears even bluer than the Canon. From what is said on the image this is a single shot, no? Have you tried stacking several?

Cheers

Itchy
28-09-2005, 11:25 PM
Astrojase

Yes it is amazing what these cameras actually record. Last season I did M42 and was using 8 sec (ISO1600) exposures for the trapezium section. Just for fun, I took the 8 sec stack and over-stretched it. Here is the result. Yes drastically overstretched, but the faint stuff has still been recorded with 8 sec exposures. And here is the final image. 11x3min, 4x30sec and 6x8sec
http://users.bigpond.net.au/itchysastro/M42web.jpg

cheers

astrojase
29-09-2005, 10:17 AM
yes - single image.

I took a few that evening, between 50 seconds and 250 seconds (52, 86, 132 and 250)...= about 520 seconds? ISO 800 to 1600 (experimenting with the camera)

Stacked all those for fun (see attached)...

astrojase
29-09-2005, 10:29 AM
btw itchy - I checked out the web version of your M42 image...WONDERFUL...!

Itchy
29-09-2005, 09:54 PM
Yea, that is better. Not as "clean" as your first post, but much more detail and fainter stuff visible. Not quite as blue either. Stacking really helps. The more the better.

Thanks for you comment on my M42 BTW

Cheers