RE: [APML] Parks H.I.T. scopes

[Radu Corlan <rcorlan@pcnet.ro>]

On Mon, 16 Jun 2003, Gene Horr wrote:

> I have used units owned by others.  Quality falls 
> somewhere in the middle between the mass market 
> units and the AP/Tak crowd.  Optics are fixed, which
> helps things, but IIRC you do get a little bit of
> movement in the secondary, so you might want to plan
> on an off-axis guider.
> 
> I don't know hom much good coverage you get.  I 
> doubt that you would cover a 35mm frame unless Parks
> has a corrector available.

Doesn;t look like it illuminates 35mm. As for a corrector, they don't have 
one; i plan to use a TeleVue. 

> 
> If you are wanting a visual/CCD and you have an
> SBIG camera then IMO Parks would be worth serious
> consideration.  

The sky here won;t let me do film. I have a home-made ccd (KAF3200 with a 
TC237 guide chip), so all i need is a 'perfect' 20mm field. I can 
even take some mirror shift - at f/4, anything over a few minutes is 
sky-limited anyway and i can stack frames.

> If planning film, though, you might
> want to save for the Tak.  You might want to 
> look into the Tak 5" & 6" f/3.X astrographs.

For film, i would. But i spend most of my observing time doing dim 
variable star work, and i need a little more aperture for that.

Thanks for the information,

Radu
  
> 
> Gene Horr
> genehorr@houston.rr.com
> 
> -----Original Message-----
> From: astro-photo-bounces@seds.org
> [mailto:astro-photo-bounces@seds.org]On Behalf Of Radu Corlan
> Sent: Sunday, June 15, 2003 4:09 PM
> To: Discussion of Film Astrophotography
> Subject: [APML] Parks H.I.T. scopes
> 
> 
> 
> Anybody on the list using a Parks H.I.T. (Newt / Cassergrain)? I was 
> tempted by a Tak CN212 for a while, and the Parks looks like a good 
> alternative (and quite a bit cheaper, too).
> 
> Radu
> 
> 

-- 

-------------
Radu Corlan       Snail Mail: Bucuresti sect. 1, 
rcorlan@pcnet.ro  str. Argentina nr. 28, Romania

   You can still escape the "Gates" of Hell!   
                 Use Linux!                       



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