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Posts Made By: Gregory Damiani

March 13, 2003 03:10 AM Forum: Equipment Talk

Another Chromacor question

Posted By Gregory Damiani
Just remembered, the Chromacor also corrects for spherical abberration. There are 5 different degrees of correction -2 degrees over, 2 degrees under and a null correction. By utilizing one of the various levels of correction, I think the Chromacor can be utilized for various F ratios. The below link to a page at apm-us shows test results of Chromacor with various F ration scopes.

http://www.apm-us.com/amateur/chromacorr.htm

March 16, 2003 07:07 PM Forum: Equipment Talk

Refractor Collimation

Posted By Gregory Damiani
Tony & Alan:

Thank you. I found the older thread. Great help.

I'm guessing, square the fouser first, then collimate?

March 18, 2003 02:13 AM Forum: Equipment Talk

Artificial Star / Alternate Light Source

Posted By Gregory Damiani
Thank you, everyone, for the advice. i will definetely get the book (checking with Anacortes first), and will try some of the other ideas. Thanks again.

March 23, 2003 06:03 AM Forum: Equipment Talk

EP's for 6" Celestron Refractor

Posted By Gregory Damiani
Looks like you've got a decent selection already, with some magnification flexibility given the barlow. How do you like the Radian, especially for planets?

I'm using Meade's 6" refractor (AR 6). I don't have much of an EP selection. I've ordered the $99 EP deal - wont be going up in quality, but at the price ...

I'm having trouble with my high power EP (5 mm series 3000 plossl) as there isn't much eye relief or FOV. I'm observing in hot & sticky South Florida. Great seeing, right until everything dews up. With the 5 mm the proximity of my eye fogs the EP in about 15 minutes.

I'm trying to decide on some better EP's with better eye relief. I'll watch the posts to your query, but the radian sounds nice.

May 26, 2003 01:02 PM Forum: Solar System Observing

This morning's catch - Mars.

Posted By Gregory Damiani
Great image!

I can see, especially in the 1st image a whiteness at the righthand side along the edge of the planet, below the dark area. Is this just some type of artifact or illusion? I noticed the same thing this morning (5/26/03) at about 5:00 -5:45 AM, but the whiteness covered the entire limb and seemed thicker than in your image. It was there no matter what EP or filters I used. Any possibility this is an actual atmospheric pnenomenon on Mars?

Gregg

October 26, 2003 12:04 AM Forum: Equipment Talk

Just Ordered: Orion 80 ED

Posted By Gregory Damiani
Congratulations! Enjoy it.

I can't say its particularly light, but I can reccomend the "regular" Williams Optics diagonal as a cost effective option. Depending on how you are mounting, you might want to rethink the "lightest" part. I have found I wanted as much weight at the EP end so as to push the tube forward when balancing. This way you have less contortions to go through, eg. when you change from viewing at the horizon vs. zenith.


October 26, 2003 12:31 AM Forum: Equipment Talk

MK 67 vs 6" F-8 Achromat

Posted By Gregory Damiani
No doubt the M715 would be a better choice, however, at more than twice the price I can't justify it (especially to my boss - I mean wife) ($2345 standard / $2845 deluxe). My main concern is that I not take a step backward from the 6 " Achromat. The smaller tube will likely get me out more often.

What I'd really like is the M91 (9" F/13.5 MakCass w/ 26% co). Have to wait for the wallet to catch up to the appetite.

Seriously though, the M715 was clearly my top choice, the MK 67 was simply a more "economical" compromise.

I hope I'm happy. I'll let you all know.


October 27, 2003 09:58 PM Forum: Equipment Talk

Question re:

Posted By Gregory Damiani
Hi all.

I am about to post my first ad to sell my AR 6 OTA.

Question. I see many advertisers accept PayPal. How does this work? How do you go about setting up an account?

BTW: Thanks to everyone who responded to my MK 67 vs. 6" Achromat post! I picked up the new scope yesterday, no curse, Saturn was awesome! Now I need to sell the big scope.


October 27, 2003 10:00 PM Forum: Equipment Talk

MK 67 vs 6" F-8 Achromat

Posted By Gregory Damiani
Thanks to everyone who responded to my post.

I picked up the new scope yesterday. No curse. Saturn was awesome. I will follow up with some info on the scope and my purchase experience if anyone is interested.

Thanks again!

November 23, 2003 07:04 PM Forum: Equipment Talk

Re: AR6 Removing the focuser end of the scope?

Posted By Gregory Damiani
Exacty what I used. I flocked to the 1st baffle at both the objective and the focuser end. I flocked the focuser tube to 1st (or 2d) baffle(s). I also flocked the dew sheild. Get a cheshire eyepiece (about $30 from Anacortes). Collimating the AR 6 with the cheshire is simple. No guess work, no waiting for good seeing, all in your living room.

Good Luck & clear steady skies.

Gregg

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