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Hello APML:
For those that are interested
there is a CCD image of the core of Eta Carina Nebula taken with the Megrez 80SD
refractor through an H-alpha filter at:
I believe the Megrez 80SD refractor is made by Williams Optics and
sells for about $650. The fellow (Peter Ward) who took the CCD image had
this to say about it on the SBIG users group:
Hello group,
Thanks for the feedback, for those who were interested,
the image is
of Eta carina. (standard candle of the south)
SBIG
ST10e, CFW8 and custom scientific H-alpha 3x 300 seconds.
No I haven't
given up waiting for my AP 155 ;)
It's a great little scope, performing
much better than any camera lens
in my aresnal, but I have to say the blue
focus is just average.
The spherical correction was down the line, hence the
great result
with H-Alpha...which I would imagine would also make it a good
solar
scope....watch this space...
Regards
Peter Ward
----- Original Message -----
Sent: Wednesday, March 27, 2002 10:58
AM
Subject: Re: [APML] Medium format wide
field scopes
I hear Williams Optics makes a suberb refractor of short focal length and
it is sold, I think, by Anacortes.
glenn shaw
----- Original Message -----
From:
Matt BenDaniel
Sent: Wednesday, March 27, 2002 11:04
AM
Subject: Re: [APML] Medium format wide
field scopes
At 08:40 AM 3/27/2002 -0800, Mike Connors wrote:
>Hi
all,
>
>I'm thinking about scopes for wider fields and shorter
exposures than my current setup (6"f9 refractor, max. field: 2.5x2.9
degrees/Pentax67). If it was available for less than 50% over new
price, the choice would be obvious (to me, that is): the A-P
Traveler.
I'm sure you can find a Traveler for lower than
that.
>Since they are not available, it seems that the leading
candidates are the Tak FSQ-106 and the TMB 105/650. I seem to recall
that the Tak had an objectionable 'hot spot' ? The TMB requires a
field flattener from the shots that I've seen. Anybody out there have
any film shots or links to same for either of these scopes using medium
format?
>Also, if there are any other opinions regarding suitable
scopes in the, say 500-800mm f.l. range, with focal ratios 5 to 7, I'd
appreciate hearing about them, especially if there are medium format images
that have been taken with them.
Don't forget to check out the Borgs.
http://www.hutech.com
--
Matt
BenDaniel
matt@starmatt.com
http://starmatt.com
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