Hi Allen, Yes. Both PEMPro and APPM (in APCC Pro) will calculate polar alignment to the refracted pole. -Ray Gralak Author of PEMPro Author of APCC (Astro-Physics Command Center):

Rolando: For a long time I used the Baader Vario-Finder as a guide scope with my TEC140ED (FL = 1035 mm with flattener). The guider is an SX Superstar. The Vario-Finder bracket (the one you sell) is

The helical focuser adds no extra length since you move the tube in further to accomodate it. The tube ends exactly in the same place as before inside of the extension at the end and is much easier

Adding a Crayford focuser will make the system unstable (flex) and defeat the purpose of the finder as a guide scope. Rolando

Bob, As a reminder, the Baader finder uses the locking ring and lens as a fine focuser. Regards, George George Whitney Astro-Physics, Inc. Phone: 815-222-6538 (direct line) Phone:

Bob, I don’t know about a Crayford style focuser, but Baader makes nice helical focusers for the Vario-Finder. The one I have is a 1.25” eyepiece holder with helical focuser built into it.

I put a ZWO 1.25 helical focuser on mine. It works great. Robert

Hi All, I would like to replace the sliding focuser on my Vario-Finder (10x60; 61x250 f/4.1) scope with a Crayford style focuser. Does anyone have a suggestion? Thanks, Bob -- Robert J.

Ray, What is the non refracted pole? Using refraction correction while polar aligning? aruckle

But you aren't using APPM for this project, are you?

That is about what I am doing with my all sky models Ray - between 45 and 50 - with my short focal length setup and small pixel setup. Most of my imaging is done at either 530 mm [~1.5 arc

A couple of questions...in PemPro, what would a damagedfirst generation 1600GTO RA worm look like, in the data? Is there a wayto tell? What about tracking? If it is suspected that the worm is

That really depends more on the scope you are using vs the modeling software and encoder system. On a refractor you can get extremely long subs with a very small model. On an SCT you can build very

It depends on the equipment you are using, especially repeatability. With only 42 points last night I was able to get 30-minute unguided images in several different sections of the sky with just a

I suspect that the answer would depend on the focal length or pixel scale that you are imaging at. -- Dean Jacobsen http://astrophoto.net/wp/ Image Gallery -

Ray would be the best to answer that one. Rolando

Rolando, any suggestions on how many data points (in general) should be enough with APPM? Larry

If the object is on Dec 60, then opposing dec lines would be 50 and 70. However, if you are using APCC Pro (APPM) then just do an automated all-sky model. Doesn't take long. Rolando

Sorry ... I pushed Reply before typing out my question for Roland and/or other unguided imagers: Given Roland's scenario of M52/Bubble, these "opposing Dec lines" would be what exactly? I'm looking to

Roland M52+61°42'32.7" Bubble Nebula +61°19'02.0"