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08-02-2011, 09:34 PM
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Join Date: Aug 2006
Location: Sydney
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Which refractor?
I have an RC8 - with which I am very happy. I use my SBIG ST8300M with it - mated to a FW8-STL filter wheel - a heavy combination.
All is good. But...
I am tempted by a wider field of view - my previous scope was a fast f4 Meade SN 8 inch. It was good and wide.
So I'm thinking (only thinking at this stage) of a refractor and am open to suggestions.
The Tak FSQ look very nice - and mighty pricey.
Televue have the 60is which should give a good field with my camera.
Louie's new little AT65EDQ has a very attractive price tag.
I would be happy to match my Canon 70-200mm L series lens to the camera but there is no adapter that I am aware of that fits my filterwheel - only Nikon.
Does anyone have any suggestions?
Pete
09-02-2011, 01:29 AM
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Join Date: Dec 2005
Location: Canberra
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Pete,
Get in touch with Peter Lee at
www.tan14.com and he'll make you/send you an EF-SBIG adapter.
He sent me one for my STL-11000M, and, it was only $50 including delivery from Hong Kong.
H
09-02-2011, 11:53 AM
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Thanks H
was that with the FW? I read online somewhere that there isn't enough backfocus if you have a filter wheel attached to the camera. I think the QSI wsg has the same issue
Pete
09-02-2011, 02:07 PM
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Have sent an email to Peter Tan. Will report on the outcome
Peter
09-02-2011, 06:05 PM
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Pete,
Hrm, you may be on to something re: backfocus. I forgot about that. Have a chat to Peter and see what he comes up with, anyways.
H
09-02-2011, 08:25 PM
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Peter reports I need 44mm or less.
I have about 53mm so the Canon adapter is a no go.
Any other suggestions - short of trading in the filter wheel and using the Canon lens?
Pete
09-02-2011, 08:34 PM
Craig
Join Date: May 2007
Location: Adelaide, South Australia
Posts: 558
Hi Pete,
You may like to consider the TMB refractor:
http://www.astronomics.com/main/prod...duct_id/TMB92L
Or a TAK Sky 90 II. But you would need a reducer/flattenner for Astrophotography.
Dougs Canon 400 mm 5.6 looks pretty good for around $1300 or the Canon 200mm 2.8 at about $900.
09-02-2011, 09:13 PM
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Join Date: Apr 2008
Location: Bribie Island
Posts: 5,059
AT65EDQ Refractor.
Quote:
Originally Posted by
pvelez
Louie's new little AT65EDQ has a very attractive price tag.
Does anyone have any suggestions?
Pete
Hey Pete .... Take a look at what the AT65EDQ is capable of ... I think it is impressive .... I'm very tempted myself.
Following credits go to Louie at CloudyNights.
http://www.atalas.net/components/com...ate=&location=
TRUE APOCHROMATIC QUADUPLET FULLY MULTICOATED REFRACTOR
ED LENS ELEMENT
65mm APERTURE f : 420mm (f/6.5)
Dual speed 2'' rack & pinion focuser with lock
1:10 microfocuser
PREMIUM ASTROPHOTOGRAPHY TELESCOPE
Cheers ..... Colin
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09-02-2011, 09:44 PM
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Location: Sydney
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Quote:
Originally Posted by
Craig_L
Hi Pete,
You may like to consider the TMB refractor:
http://www.astronomics.com/main/prod...duct_id/TMB92L
Or a TAK Sky 90 II. But you would need a reducer/flattenner for Astrophotography.
Dougs Canon 400 mm 5.6 looks pretty good for around $1300 or the Canon 200mm 2.8 at about $900.
Thanks Craig
after much investigation, I've determined that the Canon lens and SBIG won't work - not enough back focus sadly. I'm out by about 9mm.
Will take a look at the TMB.
Pete
09-02-2011, 09:45 PM
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Quote:
Originally Posted by
FlashDrive
[SIZE=2][B]Hey Pete .... Take a look at what the AT65EDQ is capable of ... I think it is impressive .... I'm very tempted myself.
Cheers ..... Colin
Yes, it is tempting - my main worry would be the focuser - but its a very nice price.
Louie, where did you buy yours?
Pete
09-02-2011, 09:50 PM
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Join Date: Apr 2008
Location: Bribie Island
Posts: 5,059
Quote:
Originally Posted by
pvelez
Yes, it is tempting - my main worry would be the focuser - but its a very nice price.
Louie, where did you buy yours?
Pete
Pete ... Click on this ... :
http://www.optcorp.com/product.aspx?...599-1089-15886
Cheers .... Colin
10-02-2011, 12:20 AM
IIS Member #671
Join Date: Dec 2005
Location: Canberra
Posts: 11,159
Anyone know what the illumination circle is of these puppies?
More specifically, will it illuminate a full-frame CCD without vignetting (too much)?
H
10-02-2011, 01:49 AM
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Join Date: Apr 2008
Location: Wynnum West, Brisbane.
Posts: 4,161
Quote:
Originally Posted by
pvelez
Canon lens and SBIG won't work
The sbig site shows nikon and canon adapters for the 8300 and it's wheel. Maybe flog off the FW8-STL and get a FW8-8300 and an adapter?
I like the tak FS60CB for a small scope. It needs the flattener or reducer for imaging but both are available.
[edit]
sorry, just realised the STL wheel will be 2" filters and the 8300 will be 36mm. doh.
10-02-2011, 07:56 AM
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Thanks Robin
that was my thought too - I have a set of BVR photometry filters as well as Ha and LRGB so the expense starts to go up.
Will look at the Tak FS60CB
Pete
10-02-2011, 08:02 AM
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Quote:
Originally Posted by
FlashDrive
Thanks Colin
Pete
11-02-2011, 12:20 AM
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Join Date: Feb 2006
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Posts: 17,915
For an 8300 chipped camera which is quite small and smaller than a DSLR, you could pick just about anything.
FSQ is pricey but its the alltime winning astrograph and matches the 8300 chip very well. You would be rapt with the resulting images.
Houghy seems happy with his 127mm ED. Larger and would need a decent mount though.
Perhaps the baby Q (85mm) is the go.Its a bit cheaper and still an awesome instrument and handles
even large chipped cameras.
Greg.
11-02-2011, 02:07 PM
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Quote:
Originally Posted by
gregbradley
For an 8300 chipped camera which is quite small and smaller than a DSLR, you could pick just about anything.
Perhaps the baby Q (85mm) is the go.Its a bit cheaper and still an awesome instrument and handles
even large chipped cameras.
Greg.
Greg
you are making this difficult!
I was keen on the Televue 60is - but the Tak BabyQ looks very tempting.
I know Tak are the bees knees - but what is the focuser like? My imaging rig is pretty heavy.
Would love to hear comments on the 60is if anyone has used one for imaging.
Pete
11-02-2011, 02:24 PM
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Join Date: Dec 2005
Location: Canberra
Posts: 11,159
If it's anything like the one on my FSQ-106N, it is built like the proverbial s#@thouse.
Mine carries the STL-11000M without a problem.
H
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