Posts Made By: Greg Shaffer

Brent Campbell said:

:S I'm looking at purchasing a used SCT this week. In preparation I ordered "Choosing and using a new cat" by Rod Mosllise. Here is my question, my use is visual, I have a hard time locating objects in the light polluted sky, would I possibly be better served by a "push to" 10" DOb from Orion like this one : http://www.telescope.com/control/product/~category_id=dobsonians/~pcategory=telescopes/~product_id=27184 ?

When using a "push to" DOB say looking at Jupiter, how hard is it to keep something in view? My ST80 refractor on a Vixen ALT/AZ mount is stable but oh so irritating to keep centered on Jupiter-or any other object other than the moon. You can't relax and view the object because it just moved out of view of the narrow field of view (ortho eyepieces).

The SCT would have tracking which would be a luxury, and to be honest I really want a versatile instrument that can be used to view several things. Transport is not an issue because I drive a truck. How long would an object stay in the field of view at say 300 X with such a scope?

I know that SCT's have central obstructions, etc, and that depending on the persons opinion that one design can be better than the other-what I really want to know about is the useability of the scope....The only thing that I have learned from my ST80 that apeature RULES but it has to be portable.

Markus Ludes said:

to continue the Apo discussion where the question came up, can a visuel doublet Apo for lower price be made , I contact a chinese maker whom I trust and got in reply, yes we can do it up to 7" with FPL 51.

Due low quantity and higher shipping cost they would be a little more expensive then other chinese apos

If we give them our Zemax design they would quote it.

So how many people want a F/10 or better F/12 doublet visuel apo for low price in the 5" , 6" and 7" range ?

comments are welcome

thanks
Markus

joseph canton said:

I've seen so many good references for the excellent quality of G&G optics, however, all the references are from years ago, including the ones on their www.dgoptical.com website. Any one have experience with their lenses made in the last two years? I wonder if the quality is now the same as 10 years ago. Any recent user experiences appreciated.

Thomas Wos said:

Any suggestions for a dedicated Jupiter refractor, longer focal length for larger image scale, and aperture under 4" for portability?

New or used made in the last 10 years or so....

Thanks

Tom

Bob Hart said:

When I respond to a classified ad I get this message in my email. My responses do not appear to be getting to the sellers.

Thanks,

Bob

Doug Peterson said:

I accidently sent a paypal payment to an AM member with whom I had exchanged emails about one of my adds. I apologized for the inconvenience and asked him to kindly refuse the money. He claimed he had no paypal account. When I went to paypal resolution they confirmed in fact he does have an account, and are working to get my refund.

If Astromart management wants to know who it is here, I can supply the info.

Dan Lamoreaux said:

Anyone ever had the chance to compare one of the older Meade 24.5 swa volcano top eyepieces to a Panoptic 24mm or heard of a review between the two? I would like to hear any opinions out there.

Dan Lamoreaux