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Posts Made By: dan hilts

December 16, 2007 01:53 AM Forum: AstroMart FAQ

Question about shipping to Canada payment

Posted By dan hilts

The buyer can send you a Canada Post MO payable in US funds that can be cashed at any USPS office without service charge. I have done this for as much as $350US, never a problem after 50 or so transactions.

Bank drafts can be used for large dollar value. In these cases, the Canadian banks transfer the account to a New York bank which makes it very easy for the receiver to deposit in a US bank. I've done this one or twice for as much as $1800US.

Your bank may levy a service charge for any cheques from outside the country. Most Canadian banks will also charge a hefty service fee to the issuer for any US cheques unless the account is in US funds. Because of the service fees which can be as high as $30 at each end, cheques are not a good way to go.

hope this helps,
dan

December 20, 2007 03:17 AM Forum: Equipment Talk

December 24, 2007 03:18 AM Forum: Eyepieces

EP's for Starblast?

Posted By dan hilts

I don't think you will find an inexpensive widefield eyepiece that will work well at F4. Why not get a decent 25mm Plossl to maximize the field and keep the exit pupil around the 6mm mark. This will provide 47% more field than the 17mm supplied. The Orion Sirius 25mm is quite acceptable as a starter. A Meade 26mm is about the same cost and will provide a slightly larger exit pupil

clear skies and good luck,
dan

January 1, 2008 06:53 PM Forum: Eyepieces

21/24 Hyperion or 20XW?

Posted By dan hilts

Mark,

At F5 I don't think the 24mm Hyperion is really a choice. The one I have is a good eyepiece in my slower refractors, but not in a fast Newt. At F4.5 I found it to be simply unusable.

good luck,
dan

January 8, 2008 08:22 PM Forum: Star Parties

WINTER STAR PARTY, anyone?

Posted By dan hilts

Hey Ivan,

I've found a ticket and booked a flight. Hope to see you there.

dan

February 12, 2008 03:29 PM Forum: Off Topic Discussions

Stray Voltage? What the . . . ?

Posted By dan hilts

Very strange indeed.

Even stranger is that NStar acknowledges that a problem exists.

dan

February 13, 2008 07:21 PM Forum: Beginning Astronomy?

sharp at higher power

Posted By dan hilts

Thomas,

There are two of these scopes in our local club. Both perform very well.

Currently, the jet stream is directly over Tenessee. Under these conditions, you will have seeing difficulties and will not be able to use high power. Jupiter will appear as you have described it.

You will get better seeing when the jet stream moves out.

clear and steady skies,
dan

February 19, 2008 12:37 PM Forum: Telescope Making

13" mirror, 9 or 6 point cell?

Posted By dan hilts

Gerry, 6 points should be more than adequate and probably preferred over 9 points. Here's a link to a good read on mirror cells design.

http://www.atmsite.org/contrib/Holm/Plop_optimized_cells/index.html

dan

March 7, 2008 06:40 PM Forum: Eyepieces

Eyepieces for a long f/l (f/27) scope??

Posted By dan hilts

Hi Warren,

Congratulations on finishing your Schief.

At that F ratio you can't beat a well made Plossl. You can spend some money trying to do better but my eyes would never see it, and any ray trace I have ever seen suggests it doesn't get any better.

For the ultimate in throughput, but a narrow field, try a simple achromat or a Hastings Triplet.

If you want the wide field views you will need something else but keep in mind the Schief quickly deteriorates once you get off axis.

have fun,
dan

March 11, 2008 07:48 PM Forum: Equipment Talk

Source for 90mm f/10 Air-Spaced Achromat w/ Cell

Posted By dan hilts

Surplus Shed, stock number L3947.

dan