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Messages - ovhercayvic

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16
Beginners Forum / Re: Opinion on B&H Photo & Video
« on: January 31, 2018, 01:19:46 AM »
Whoever you buy from, they all post their return policy on their sites. You should always read these before any purchase as some places have horrible return policies. B&H is one of the very best out there in this respect and you basically have 30 to return for any reason as long as everything is there and undamaged. I use them often and am always please. Recently I did a purchase there then found the item on sale for $30 cheaper, sent them a note, they sent me $30

17
Reflectors Telescopes Forum / Re: Leaf blower to clean mirror?
« on: January 31, 2018, 12:12:19 AM »
Try it, report back if it works!!!

18
Beginners Forum / Re: Low Power EP
« on: January 30, 2018, 11:45:36 PM »
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That's also a nice price on the 2" William Optics dielectric that Sky Muse posted.

Why the "dielectric"? Is that a feature and if so why? Is it anything like dialectic, which is a separator for dissimilar metals? Just wondering.

19
Reflectors Telescopes Forum / Re: Dobstuff
« on: January 26, 2018, 08:04:35 AM »
Excellent to deal with, my purchase arrived in Canada with minor damage from shipping and it was extremely well packed, he resolved the issue quickly and was a real pleasure to talk to, one thing as well, they are dobs of wood construction and that makes them great for modifications to make them user friendly if that's your thing, I like to tinker and mine has undergone several smaller mods and upgrades over the years, the only other thing is an odd touch up with varnish wherever scuffs have occurred,D.

20
Don: Maybe I'll have time for that when I retire.   As it is I'm lucky to get to my observing site before sundown and get the fans running on my primary. I'm going to make that plywood triangle and next time try and find a place in the thick grass where I can set it level and keep the scope stable. I'll then use the heavy rubber mat over that and it should mitigate the problems pretty well.

I'd rather contend with the thick grass we have than no grass at all. Hope you guys get some rain out there and please try to send some of the clear weather this way.

21
Just want to say thanks for the comments guys. I use the cheap 28 mm DeepView eyepiece that came with my Orion XT10g (although, I may upgrade in the near future) when I first sight a galaxy (exit pupil about 5.95), so that is not the best. Aside from the galaxies previously mentioned, what would be other top candidates for showing galactic arm structure (even if they are further than 50 MLY)?

22
Light Pollution Topics / Re: Are my skies actually darker in the winter?
« on: January 26, 2018, 01:01:32 AM »
When I lived in Holland, my skies were darker in the winter too.

23
Beginners Forum / Re: Light Pollution, Nebulae and Visibility oh my!
« on: January 26, 2018, 12:23:36 AM »
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<p class="citation">Augustus, on 01 Feb 2017 - 02:06 AM, said:<a href="https://www.cloudynights.com/index.php?app=forums&amp;module=forums&amp;section=findpost&amp;pid=7679346" rel="citation">[/url]<blockquote class="ipsBlockquote built" data-author="Augustus" data-cid="7679346" data-time="1485907576">

Sigma Orionis/Mintaka is one of my favorite doubles. Highly recommended.
Isn't Mintaka delta Orionis? sigma Ori is a wonderful multiple star system as well, but it's SE of Mintaka.
Oops. Corrected my post.

24
Eyepieces Questions & Recommendations / Re: Tele Vue Ethos 3.7mm
« on: January 25, 2018, 09:35:00 PM »
One night I suspected a white marking on Uranus in the 4.7mm Ethos SX (388x in my dob).
White marking? On the great featureless aqua ball?
So in went the 3.7mm Ethos SX (493X) and not only did the white marking become a band (it was visible for a couple months)
but I also saw 5 moons in the right places (Miranda was caught with averted vision, but it was a speck in the right place, so.....)
The image actually appeared a tiny bit sharper than the 4.7mm (trick of exit pupil, I think, since later observations found the opposite).
The 3.7 is a wide eyepiece for sure. I enjoy have a 13' field at that power. A push every 30 seconds is fine.

In the NP101, it has a 44.6' field! Only needs a push every 2-3 minutes.
Pretty amazing. And the NP101 can handle the 146x. I used mine fairly often at 216x.

25
Alvin Huey hauled a 22" in a VW Beetle. (Photos at faintfuzzies.com)

26
Beginners Forum / Re: Cheap dew heater
« on: January 25, 2018, 07:45:27 PM »
Hi, Alice. I use a 2 channel controller with 4 outputs for each scope. One strap for the corrector (or objective on my refractor), one around the diagonal (for the eyepiece), one for the finder objective and one for the finder eyepiece. I even have a heater for my Telrad when I use it. I guess I could cover the finder when not in use but I don't want to have to remember to do it. May seem a bit extreme but it gets me through all night observing in ultra humid Florida.

27
Reflectors Telescopes Forum / Re: Telescope Tube DECORATIONS & ARTWORK
« on: January 25, 2018, 05:25:41 PM »
just playing around with his pic, you could get this "print &amp; cut" as applied vinyl.


28
That wouldn't be important: if you know where the focal plane is and you null coma with a star test, then a Cheshire with the focal plane halfway between the pupil and the ring will indeed tell you _roughly_ where the centre spot should be.
But when I do it this way I usually end up slightly off the centre spot, from 0 to 0.3mm off (in a random direction).
In other words: centre spotting using a template seems to be consistent with a star test but actually _more precise_ (though a recent thread hints at the fact that, unless the bevel was ground late, the aluminised surface might be a better reference for the template than the blank due to the possible presence of wedge.)

29
Yes on the 10". I've found it to be a sweet spot between aperture and portability. It quickly became my favorite scope, tk

30
Reflectors Telescopes Forum / Re: Premium Optics vs Mass Produced Optics
« on: January 23, 2018, 05:05:53 PM »
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I don't know, but I've just seen...
Put a Zambuto mirror in my average 10" f/5.6 and WOW!!!
I can now see everything people photograph on the planets at ALPO Latest Japan.
Stars are now pinpoint sharp, I can resolve most every globular cluster to it's core.
You will never buy basic optics again after trying perfection. This is why people rave about refractors, they are mostly pretty good, much better than your average mirror. But you can match those lenses with a premium mirror. Besides who can afford a 10" lens?


It sounds you started with below average stock optics. The delta between average stock and premium optics should not be as you described. In my scope (XT10), I tried the stock optics, a borrowed Zambuto mirror, and my current residing premium Stevens mirror. Yes I do see a difference; however, the difference is subtle in terms of sharpness and contrast. I never had any regrets for upgrading my optics to premium even though the cost of the premium secondary and premium primary combined was almost twice the cost of my original XT10 new scope. My upgrade experience made be have more respect for average stock mirrors and more appreciation for premium optics.

Jason

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