Vassilis
member
Reged: 06/11/09
Posts: 28
Loc: Athens, GREECE
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Hi,
I am considering these two cameras. Trying to figure out which is the better camera, I failed....
QSI has a very nice and cost effective feature of utilising 1.25'' filters instead of 2'' for the other one (and matter of factly for any other manufacturer using KAF8300). On top of that it is available as a wsg body with integrated guider port. It tips the scales at 1.3kg.
On the other hand, Apogee with its Alta series is proven in the field. High quality, excellent cooling, a bit heavy and you have to use those 2'' filters. Which actually might not be a bad thing at all, but a future need.... 
Please, I will more than appreciate your insight.
Clear Skies,
Vassilis
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Apo Refractor from Ohio (on order)
CCD from California (on order)
EQ6 Pro
Canon 40D
Any sufficiently advanced technology is indistinguishable from magic.
Arthur C. Clarke
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Gama
Vendor (Gama Electronics)
Reged: 08/23/05
Posts: 968
Loc: I come from the land downUnder
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From the TOS: "vendors/manufacturers are to refrain from commenting on their competitor’s equipment (directly or indirectly). Please restrain your comments to products you manufacture or resell." Any such comments have been deleted from this post. CH
Edited by Charlie Hein (11/08/09 08:05 AM)
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fetoma
Pooh-Bah
Reged: 09/26/06
Posts: 1099
Loc: NW Ohio
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Don't count out the FLI ML8300 and the QHY9.
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Frank in NW Ohio
Vixen CF VC200L and R200SS
Meade SN-10
Celestron 9.25" SCT
Meade 8" f/6.3 SCT
Intes-Micro M73
Stellarvue 80/480 LOMO Triplet
Takahashi FS-60C
Celestron CGE
QHY8 and SXV-H16
www.jerseydevilastronomy.com
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Alph
sage
Reged: 11/23/06
Posts: 261
Loc: Melmac
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Quote:
On the other hand, Apogee with its Alta series is proven in the field.
Same applies to QSI. The main disadvantage of the QSI-583 is the slow download time. Some people say it is not a problem though. If you can cool down the QSI to -20C under your weather conditions then that’s all what you need.
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Gama
Vendor (Gama Electronics)
Reged: 08/23/05
Posts: 968
Loc: I come from the land downUnder
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Dont knock slow download speed either, as a slower speed helps in readout noise.
Theo.
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Tomvictor
professor emeritus
Reged: 08/09/04
Posts: 509
Loc: N.59.11.47. Norway
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Hi Vassilis, so have you ruled out the 4021/22 chip? It is hip to be square :-)
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Tom Victor
http://www.ccd-astrophoto.com/
Takahashi EM-200 - 10" LX200ACF - Artemis 4021M - Mini Borg 60ED - FLI CFW - DSI PRO II. Canon EF200L f/2.8 - 450D - Baader mod. 350D.
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Vassilis
member
Reged: 06/11/09
Posts: 28
Loc: Athens, GREECE
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Quote:
Don't count out the FLI ML8300 and the QHY9.
I agree for the FLI, but not for the QHY9. I have see quite a lot of serious QC issues, however solved.
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Apo Refractor from Ohio (on order)
CCD from California (on order)
EQ6 Pro
Canon 40D
Any sufficiently advanced technology is indistinguishable from magic.
Arthur C. Clarke
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Vassilis
member
Reged: 06/11/09
Posts: 28
Loc: Athens, GREECE
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Quote:
Hi Vassilis, so have you ruled out the 4021/22 chip? It is hip to be square :-)
Yes, I do. After thorough thinking and testing, I concluded on this sensor for my current and short-term setup.
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Apo Refractor from Ohio (on order)
CCD from California (on order)
EQ6 Pro
Canon 40D
Any sufficiently advanced technology is indistinguishable from magic.
Arthur C. Clarke
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btieman
sage
Reged: 07/24/08
Posts: 483
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I have a QSI520--not same chip, but same platform. I've also used several chips on the Alta platform as well. The Altas are nice--nothing wrong there. However, my next camera will be another QSI. They are very well designed--mechanically and electronically.
Brian
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CPC 1100
Orion 120st
Milburn Wedge
QSI 520i
Meade DSI Pro
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Alex Ranous
member
Reged: 09/05/07
Posts: 11
Loc: Redwood City, CA
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SBIG just announced the ST-8300 at AIC today.
- Both Mono and Color versions
- 7.7 sec full frame download - 1 sec focus mode
- Read Noise 8e-
- Cooling -40C max
- Small - same body as ST-402
And the best part - $1995
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Televue NP101is
MI-250
Q453-HR
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Alph
sage
Reged: 11/23/06
Posts: 261
Loc: Melmac
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Quote:
And the best part - $1995
Is that a typo? If that's the fact then other vendors of the KAF-8300 based cameras will have to lower prices to compete with SBIG.
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David Pavlich
Postmaster
Reged: 05/18/05
Posts: 8687
Loc: Mandeville, LA USA 30.22 X 90....
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Quote:
Quote:
And the best part - $1995
Is that a typo? If that's the fact then other vendors of the KAF-8300 based cameras will have to lower prices to compete with SBIG.
No typo, Alph...they have a working model here. They saved money by utilizing the old ST402 case. I put myself on the pre-order list.
David
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Proud Member; PAS NOLA,
"If we knew what we were doing, it wouldn't be called research..."
A. Einstein
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LLEEGE
Running out of Oxygen
Reged: 03/03/05
Posts: 9082
Loc: Cloud-chester,NY
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MAN! What a deal! Can the old 402 body achieve -40C cooling?
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"Okay! You draw the straws. I'm-a taking the parachute."
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lineman_16735
Tak-o-holic
Reged: 12/04/04
Posts: 2604
Loc: Central PA
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The deal breaker for me is that the new ST-8300 does not have an integrated guide chip. I would pay $3k with the integrated guider but thats just me. It also will require new filters and filter wheel as the filter size for this camera is 36mm. I also assume it is still USB 1.
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Chris
A mount from Illinois
A scope from Japan
A camera from Cal-I-Fornia
A dog from Kentucky
A wife and kids from the "Twilight Zone"
The Geek Shed
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blueman
Vendor Blue Sky Accessories
Reged: 07/20/07
Posts: 1435
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Lineman,
Yep, I have the same issues, by the time you buy everything you can buy the FLI or the QSI.
I think the old sized 36mm filters is not a great idea either. If you are going to sell off your 1.25" filters, wheel and camera, you might as well buy a 2" set with wheel and another camera. Then if you decide to go a larger chip in the future, you will not have to sell another set of filters and wheel at a loss.
I like SBig, I own one, but it seems to me this is a low ball camera that is meant to compete with the other cameras that are on sale or even the new Orion 8300 camera that is said to be coming.
I just can not see where the SBig would be a better deal that say the QSI with internal filter wheel and OAG and then you can use your existing filters.
Floyd
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14.5" Starmaster with ServoCat and Argo Navis
AT 8" RC
TV NP101 f/5.4 APO Telvue .8 Focal Reducer
WO 80mm f/6 APO Televue .8 focal reducer
SBig ST2000xm with CFW-9 filter wheel
Astrodon Gen2 filters RGBL
Baader HA,O-III, H-Beta, S-II Filters
Losmandy G-11 Gemini Auto-guided
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Gama
Vendor (Gama Electronics)
Reged: 08/23/05
Posts: 968
Loc: I come from the land downUnder
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Quote:
Quote:
Don't count out the FLI ML8300 and the QHY9.
... but not for the QHY9. I have see quite a lot of serious QC issues, however solved.
If solved what are you talking about then ?. 
What are "Serious QC issues". The ONLY issue that has given grief was the front of the filter forming a dew spot for certain users in high humidity locations.
The QHY-9 has no further issues even in 99% humidity areas.
Maybe you should read or ask someone that has one rather than speculate on old news.
From the TOS: "vendors/manufacturers are to refrain from commenting on their competitor’s equipment (directly or indirectly). Please restrain your comments to products you manufacture or resell." Any such comments have been deleted from this post. CH
Theo
Edited by Charlie Hein (11/08/09 08:50 AM)
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Alph
sage
Reged: 11/23/06
Posts: 261
Loc: Melmac
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Quote:
I just can not see where the SBig would be a better deal that say the QSI with internal filter wheel and OAG
4590.00/1995.0 = 2.3
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Gama
Vendor (Gama Electronics)
Reged: 08/23/05
Posts: 968
Loc: I come from the land downUnder
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From the TOS: "vendors/manufacturers are to refrain from commenting on their competitor’s equipment (directly or indirectly). Please restrain your comments to products you manufacture or resell." Any such comments have been deleted from this post. CH
Edited by Charlie Hein (11/08/09 08:07 AM)
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David Pavlich
Postmaster
Reged: 05/18/05
Posts: 8687
Loc: Mandeville, LA USA 30.22 X 90....
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Quote:
MAN! What a deal! Can the old 402 body achieve -40C cooling?
Hey Luke....the SBIG guys said that -40 can be reached, but typically, the regulated temp will be -35. Not bad. I'm on the pre order list for a OSC version.
David
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Proud Member; PAS NOLA,
"If we knew what we were doing, it wouldn't be called research..."
A. Einstein
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blueman
Vendor Blue Sky Accessories
Reged: 07/20/07
Posts: 1435
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4590.00/1995.0 = 2.3 ?
The $1995 does not include a filter wheel or an OAG, so how do you figure that comparison?
The ST8300 @ $1995 vs. QSI at $3500 would be a more fair comparison though.
However, the new ST8300 is in the lessor case not the one like the ST2000. So of course it would be somewhat cheaper to produce.
Blueman
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14.5" Starmaster with ServoCat and Argo Navis
AT 8" RC
TV NP101 f/5.4 APO Telvue .8 Focal Reducer
WO 80mm f/6 APO Televue .8 focal reducer
SBig ST2000xm with CFW-9 filter wheel
Astrodon Gen2 filters RGBL
Baader HA,O-III, H-Beta, S-II Filters
Losmandy G-11 Gemini Auto-guided
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