Lagoon Nebula

CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
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cataclysm
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Lagoon Nebula

Post by cataclysm »

Imaged this on Friday night. Apart from hazy condition, the sky really opened up, allowing uninterupted imaging that spans nearly 5 hours! Could't ask for more!
The set up:
TV Genesis SDF
Mini Borg 50mm as Guidescope
Canon 350D (mod)
22x240s ISO800 with Halpha filter ( luminance frames )
48x120s ISO800 with Astronomic UHC filter ( colour frames )
ImagesPlus for calibration, stacking & processing

Image
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cataclysm
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Post by cataclysm »

Here is an uncrop version.

Image
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weixing
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Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
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Post by weixing »

Hi,
Nice... :D

I'll want to image this object again (my first attempt was using the 6" F5 Newtonian) soon, but I think my 1000mm focal length scope may have some problem framing the object.

Have a nice day.
Yang Weixing
:mrgreen: "The universe is composed mainly of hydrogen and ignorance." :mrgreen:
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rcj
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Post by rcj »

Hi Kelvin,

Nice contrast on the nebula! Worm seems to be working fine! Good job.

Hi Weixing,

I am also imaging at 1000mm F.L. nowadays. You could try mosaicing if u do not mind the extra work. Lots of details and full scale of the object.
Photon Bucket
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ariefm71
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Post by ariefm71 »

Beautiful...
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cataclysm
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Post by cataclysm »

I'll want to image this object again (my first attempt was using the 6" F5 Newtonian) soon, but I think my 1000mm focal length scope may have some problem framing the object.
Hi Weixing, I think at 1000mm the APS-C size sensor of your Canon should be able framed it with a bit to spare. My Genesis imaged at prime is 540mm, and from the first picture I had it cropped more than 50%.
Worm seems to be working fine!
Hi Remus, yes the worm works really well! I can see that the autoguider is not correcting the drive errors as hard as b4. Thanks again!
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Tachyon
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Post by Tachyon »

Nice! I need to have autoguiding soon...
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
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VinSnr
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Post by VinSnr »

Tachyon wrote:Nice! I need to have autoguiding soon...
I think for DSLR, autoguiding is not really necessary because your exposure is pretty short. Just do a good drift should do.

But if you are using CCD like our Remus, then I think better autoguide.
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Tachyon
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Post by Tachyon »

Yeah.. mine is Starshoot...
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
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Meng Lee
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Post by Meng Lee »

Autoguider is needed to go deep. If subexposures are too short, then you need to stack hundreds to get good signal to noise ratio (meaning edges of nebula looks grainy implies subexposures could be too short leading to poor signal to noise ratio.)

personally I recommend Trifid Nugget as autoguider or ST402 as autoguider.
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