Astromart

August 16, 2004 01:12 AM Forum: Equipment Talk

my new 12.5" truss conversion by Teeter's Telescop

hi,

i bought the discovery used, it was the old model with the 6" atz bearings. The mirror was great but the mount was very wobbly so I converted it to a truss.

I'll let you all know how it works. I do know it balances fine in a near horizontal position with a 35mm Panopitc and a Telerad finder on it.

clear skies,

Larry Citro

August 19, 2004 04:25 PM Forum: Equipment Talk

Value of used equipment? Opinions please.

Posted By Larry Citro

hi,

IMHO 1500 dollars is a fair price for all.

Larry Citro

August 29, 2004 10:27 AM Forum: Equipment Talk

Which Would You Choose?

Posted By Larry Citro

hi,

for those of us who are buying our first scope a 10" dob is an excellent choice.

clear skeis,

Larry Citro

September 1, 2004 06:43 PM Forum: CCD Imaging and Processing/Solar System

NGC7662 Blue Snowball

Posted By Larry Citro

hi,

That is a very high resolution image , 1.3 arcsec FWHM ...WOW. I must say it does show, never have seen an image of this with such resolution.

clear skies,

Larry Citro

September 5, 2004 12:01 AM Forum: CCD Imaging and Processing/Solar System

NGC6543 Cat's Eye Planetary

Posted By Larry Citro

hi,

" Seeing was not quite as nice, only achieved 1.7 arc sec FWHM resolution. Still came out fairly nice."

Hmmm.. I'd say it came out very nice. Good detail and color of this interesting planetary

clear skies,

Larry Citro

September 5, 2004 12:12 AM Forum: CCD Imaging and Processing/Solar System

NGC6543 Cat's Eye Planetary

Posted By Larry Citro

hi,

hi resolution ccd imaging is a game unto itslef and is much different then imaging with a 5" f6 scope of 30" FL. You shot that at 220" FL ...amazing.

To get that kind of image EVERYTHING must be spot on. The optics must be first rate, the collimation must be exactly on, the mount must be up to the task in terms of load capicity and PE, the seeing must be good and the processing skills must be expert.

The longest FL I've imaged at is 120" and that was hard enough.

It seems to me you have mastered all of the above.

clear skies,

Larry CITRO

September 8, 2004 07:34 PM Forum: Equipment Talk

opinions on C925 collinination

Posted By Larry Citro

hi,

i do the final collimation steps with my C8 with a 2.3 mm eyepiece in place, no diagonal and center the arey disk in the 1st diffraction ring . That's the only way to get it perfect. You need good seeing to do this and it's faster with two people ( one tweeking and one looking ).

clear skies,

Larry Citro

September 9, 2004 10:57 AM Forum: Equipment Talk