[ATMoB-discuss] DSLR able to be used for astrophotography

[Michael Brown]

I'm a beginner at deep-sky digital astrophotography and got a Canon Digital 
Rebel XT a few months ago.  Without extensive experience, I can say it seems 
really good, easy to use, etc.  There is a bulb setting, and the shutter can 
be held open with a cable-release type device that connects to the camera 
(there is also a remote version that I have not bought).  On my first night 
out a few months ago I took some 1-2 minute unguided (but tracked) exposures 
of M13, M57, and M31 at prime focus through an 8-inch Celestron SCT.  One of 
the M31 shots showed some spiral structure and I was very pleased.  I'm 
still learning about image processing but it looks very promising.  I have 
read that this and other digital SLRs are insensitive in red so not great 
for emission nebulas.

----- Original Message ----- 
From: "Bern Kosicki" <kosicki at verizon.net>
To: <atmob-discuss at atmob.org>
Sent: Monday, January 15, 2007 12:43 PM
Subject: [ATMoB-discuss] DSLR able to be used for astrophotography


> I'm looking for a DSLR for use both for general photography and 
> astrophotography.
>
> Want something pretty compact and light (relatively), as well as fairly 
> sensitive.
>
> Some candidates are:  Canon Rebel XT, Nikon D40 and Olympus E-500.  All 
> are in the 6-8 MPix class and among the most compact available.  Also, 
> these have (relatively) attractive prices.
>
> Anyone have experience with any of these?
>
> Can you astrophotographers who have used DSLRs please list the must-have 
> features I should look for if using it for astrophotography?
>
> Thanks,
>
> Bernie Kosicki
>
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