From: Mark Gaffney <markgaffney@mac.com>

Date: July 28, 2008 5:21:55 PM MDT

To: astro_IIDC@yahoogroups.com

Subject: Jupiter with Baader filter..

Hi Milton, & others, I got out last night with the 10" & 4 star aligned the scope.Using the 25mm eyepiece was a good bit easier for this process than the 20mm one. I noticed slewing was slightly off (10- 20 degrees) when Auto aligning these stars, I guess due to incomplete PA. I then rushed somewhat precipitously, to try my new Baader UV/IR cut filter with my DBK 21A F04.AS. Similarly Jupiter was out by the same amount when slewed to after the 4 star. It was also dancing around so much to in the camera`s FOV that refining the image was difficult if not impossible. In the brief time I had before the planet skipped out of view &  had to be re-found I noticed that the disk was still too bright to discern surface detail as I had with the 4" scope. I had limited time to adjust the levels mostly shooting at  the 33ms setting, Gamma 1.00 & moderate gains.I did also try adjusting the brightness & focus  somewhat.These are the settings I used for my movies with the 4" scope. Would these be adviseable levels for the 10" too? One thing I must check next time is the relative position of the object in the finder when discernable by the camera as this will be invaluable when actually nudging the image into view. With the 4" it was down & right of the centred eyepiece position. At least I was getting some form of image of Jupiter at the outward extent of the focuser with the nosepiece assembly out a little in it`s position in the sleeve. I`m pretty sure I hadn`t accomplished this before! Mark.