The AP illuminated finder looks very similar to the Celestron/Vixen era 7x50 I recently purchased off astromart (actually all I wanted was the rings, but I got...
Dear Valery, I don't understand your statements. Please refer to my e-mail dated December 5, 2005 which included all information that you requested. Your...
We do not purchase the finders from Vixen. Marj Christen Astro-Physics, Inc 11250 Forest Hills Road Machesney Park, IL 61115 Phone: 815-282-1513 Fax:...
In a message dated 6/1/2006 3:22:28 PM Central Daylight Time, ... It's more like 2 years Rolando [Non-text portions of this message have been removed]...
Me: Alex, I'll take "Irony" for $200. Alex: OK. The answer is, "5"? Me: How many more years have I been frustrated waiting for astromnical equipment than...
Roland, Marj or Alice (or anyone else at AP who may be reading this) -- Can I buy a BARCON with a 3.6" extension (EXTTLR) rather than the 1.75" extension...
We just got the parts back from the anodizer and we will start assembling tomorrow. The backorders, like yours, will be filled first. Marj Christen ...
In a message dated 6/1/2006 3:53:10 PM Central Standard Time, chris1011@... writes: It's more like 2 years Rolando Hmmmm..........that's still better than...
Well...doesn't that make it even MORE ironic? Anyhow I note that the SPLs are often available on Astromart: my sense is, out of proportion to the numbers...
It's one of the best astronomical animated sequences I've seen, sometimes animated sequences don't have the underlying sharpness of this one. regards Greg N...
I recently read a "something new to me" item and would like to float it here for comment. To wit: that the planetary eyepieces are best suited for long focal...
... they ... not ... The "planetary eyepiece" for many design reasons is an excellent eyepiece for any scope regardless of its focal length or design IMHO. But...
Greg, You can easily narrow the shape of a steep light cone coming from a fast mirror or lens by amplifying the primary's focal length (f.l.). On a fast Dob or...
Greg - I've been posting wanted ads for the 4mm and 5mm SPLs on Amart for months, offering to pay a premium, with no luck. Many of us are waiting for...
Well sometime I'd like to try one out. Unfortunately that means it is likely I'll have to buy one. Somewhere, somehow. I have not given particular attention...
... Short f.l. Planetary eyepieces such as Zeiss Abbe's, SPL's, Tak LE's all have very small field lenses at the eyepiece's front end. Many of these lenses are...
Pentax did make 4-element ... competition. They're discontinued ... One planetary eyepiece that is worthy of consideration if you are having a hard time...
In a message dated 6/2/2006 11:55:31 AM Central Daylight Time, ... Most eyepieces, regardless of type, can display the same sharp image on-axis. That assumes...
Hi Roland: What is the trick to interior crud detection. I find eyepieces rather difficult to inspect internally. Take a flashlight and shine it in there? I...
Hi Roland: What is the trick to interior crud detection. I find eyepieces rather difficult to inspect internally. Take a flashlight and shine it in there? I...
