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Old 08-11-2010, 12:47 PM
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pvelez (Pete)
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QSI vs ST-8300M

I have a SBIG ST-8300M. It runs well but is a bit heavy when mated with my filterwheel.

With the ever increasing A$, I'm tempted to trade up to the QSI 583 wsg. Its smaller, lighter and will do away with the guidescope I have. Downside is cost (as always) and the suggestions I've read that the small filters (1.25") can vignette.

I have an RC8 - f8 so I have no issues with the ST-8300. Its too heavy for my SN8 - at f4 I used a MPCC when running the camera without the FW. I could use it with the QSI I guess.

So what's the verdict - is it worth trading up/over?

Pete
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Old 08-11-2010, 01:05 PM
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I have the QSI 540 wsg, which has a slightly bigger chip than the 583 and also uses 1.25" filters. I have never had trouble with vignetting, so I'm sure the same will apply to the 583
Geoff
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Old 08-11-2010, 08:57 PM
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Have the QSI583WSG and love it. Compact and uses 1 1/4" filters. Just soooo much definition in the chip, just so easy to use. I married it to CCDSoft and its a real dream to use.
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Old 09-11-2010, 10:06 AM
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pvelez (Pete)
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Oh dear - I fear some unnecessary expenditure coming on....

Looks like I might have the ST8300 on the market soon

Pete
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Old 10-11-2010, 09:34 AM
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No vignetting seen on my gear yet.
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Old 17-11-2010, 07:20 PM
Hans Tucker (Hans)
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AstroPhoto Insight Magazine are publishing a QSI 583 and SBIG ST-8300 Comparison in their December edition.
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  #7  
Old 17-11-2010, 08:02 PM
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SkyViking (Rolf)
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I'm contemplating a new camera next year and am seriously considering the QSI 583 too. Looks like a full package at a very attractive price.
I'll be using it on an f/5 Newtonian, so I hope it doesn't vignette but it seems people don't have problems with that.
Only drawback I can see is the somewhat lesser cooling ability, but with me being in NZ that won't be a problem for most of the year
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Old 17-11-2010, 08:22 PM
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At f5 it does vignette. Nice cam otherwise.
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Old 17-11-2010, 08:37 PM
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Quote:
Originally Posted by bert View Post
At f5 it does vignette. Nice cam otherwise.
QSI claims it goes down to f/2.8 without vignetting, but that may be marketing of course. I'll have to research a bit more on this before I make up my mind, but it looks promising indeed.
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Old 18-11-2010, 09:25 AM
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Might prove academic for me - I've had no response to my for sale ad yet

Am waiting for that AstroInsight article too

Pete
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  #11  
Old 20-11-2010, 12:38 PM
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The 8300 chip is a very clean chip even at room temps. So I am not sure heavy cooling is as valuable with this chip as it would be with some others.

Of course given the choice between high cooling and lesser cooling then higher cooling would be the go.

Offaxis guiders though, once mastered are a great improvement over guide scopes. Having one built in to the camera is a fantastic idea and I am surprised other camera makers don't jump onto that wagon. It seems to be a winner.

Roland Christen of AP has the QSI 8300 with the offaxis guider. So that's quite a recommendation.

Greg.
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