Image of the day

Captured by
Douglas Rollain

M20 Trifid Nebula in LRGBHa

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: dan hilts

December 11, 2011 12:15 AM Forum: Off Topic Discussions

$3,800,000 ?? Really? So that is why they do it!

Posted By dan hilts

Absolutely incredible! Who would have thought?

dan

December 26, 2011 02:05 PM Forum: Eyepieces

Best ones

Posted By dan hilts

I don't know about all of them, but the 24Pan would be in the mix for sure.

dan

January 15, 2012 05:50 PM Forum: Refractors

star test oddity for optical mavens

Posted By dan hilts

I have a 127mm Orion Mak that shows very similar star test. The problem in mine is a defect in the central zone of primary mirror. The defect is about the size of a dime and resembles a clam shell fracture at the edge of the central hole but it is next to invisible to the naked eye. You can see it if you catch a reflection just the right way.

It doesn't seem to affect images much but is obvious in a star test.

dan

February 20, 2012 08:57 PM Forum: Deep Sky Observing

What are your most unforgettable telescopic sights

Posted By dan hilts

Saturn at 1200X during WSP 2005. Simply amazing.

Saturn was almost straight up and the seeing was the best I have ever witnessed.

dan

April 25, 2012 01:53 PM Forum: CCD Imaging and Processing/Deep Sky

Markarian Chain

Posted By dan hilts

Floyd,

Congratulations on a great photo. Nice and crisp. I am amazed at just how much detail shows.

dan

April 25, 2012 09:15 PM Forum: AstroMart FAQ

Paypal fees ......

Posted By dan hilts

jim chung said:

I just wanted some feedback from fellow Amart users because maybe I'm wrong and if so I need my attitude changed!

My beef is people who charge Paypal fees (which varies from 3-4%) on top of their asking price. I feel this is disingenuous because the asking price is not really the true asking price, like a bait and switch technique at a car dealership where the bare bones car with no options advertised at a bargain basement price is never available but the fully loaded model is.

eBay forbids vendors from charging Paypal fees, store merchants don't charge you extra to cover the credit card company's commission when you use plastic. I don't charge my patients extra when they pay via plastic at my dental office. It's the price of doing business in the 21st century and frankly I'd rather pay the credit card commission rather than spend extra time and money chasing down bogus cheques.

Why can't Amart sellers merely raise their asking price to cover the Paypal fee. Or eat it because again I'd much rather have an instant funds transfer and confirmation of a sale than wait weeks for a cheque to arrive in the mail that may never appear and lose other potential buyers. On expensive astro items I've often asked people to Paypal me a nominal deposit to indicate they really are serious and if they are serious it's never been an issue.

Am I wrong?



It is against the user agreement for Paypal users to charge the fees to a buyer. But who ever plays by the rules they agreed to anymore? And of course, if a seller isn't willing to abide by the agreement they made with Paypal, what makes you think they will abide with any agreement they make with you?

"You agree that you will not impose a surcharge or any other fee for accepting PayPal as a payment method. You may charge a handling fee in connection with the sale of goods or services, as long as the handling fee does not operate as a surcharge and is not higher than the handling fee you charge for non-PayPal transactions."

dan

May 6, 2012 01:15 PM Forum: Telescope Making

grinding a mirror // my first attempt

Posted By dan hilts

Joseph Babendreier said:

Thanks to the kindness of one of the Astromart old-timers--and his unflagging encouragement--I'm jumping into the mirror grinding adventure.

If this works, I'll be truly amazed.

I guess for some of you, it's the sort of thing you do with your eyes closed and your hands tied behind your back. But for the first-timer, it looks like a daunting task.

I got some books (four of them at this point) so I've got more information/advice than I can cope with.

I'll let you know how it goes.

Clears,
Joe

Congratulations on your new adventure. If you keep it simple, follow the instructions and don't try to take any shortcuts you will get a good mirror. Have fun!

dan

June 25, 2012 07:36 PM Forum: Telescope Making

Querry on grinding a 12.5" mirror

Posted By dan hilts

Sounds like reasonable progress so far. It takes a long time to push the curve right out to the edge because at this point you have to remove a layer of glass from the whole surface. As long as the resistance of the tool is smooth, I wouldn't be concerned with problems at this stage.

dan

June 29, 2012 12:50 PM Forum: Equipment Talk

Toronto store, Efstonscience is closing!

Posted By dan hilts

Wow, I was just at Yorkdale on Monday but never bothered to drop in. I can remember when they first opened and I bought a lot of stuff there over the years. Lately though, their after sales service has sucked and their pricing has been higher than most. That is not a recipe for success.

dan

July 25, 2012 01:37 PM Forum: Telescope Making

foucault tester

Posted By dan hilts

Focus the scope on the mirror surface.

If you can see the shadow of the knife edge but not any patterns, you may not be close enough to the radius of curvature with the knife edge. Slide the assembly closer to the mirror or further back until you get the knife at the radius of curvature and the mirror darkens all over at once as you move the knife edge into the beam.. Then you should be able to make fine adjustments to see the patterns.

hope this helps,

dan