Recent Posts

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Instead of disassembling the EP why not engrave on a filter (clear or light color) and screw on to the bottom of the EP?
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Eyepieces Questions & Recommendations / Re: Edmund 8mm RKE vs Televue 8mm Plossl
« Last post by ndesevtenzio on February 09, 2018, 11:20:11 AM »
The RKE is a modified Kellner and it performs rather well.

People generally feel Plossls and Orthos are better, but I also really enjoy using the RKEs.

And of course the 28mm RKE has gigantic eye relief in a small body and when observing through it the eyepiece appears to disappear.

I was showing someone brand new to astronomy objects all night using some nicer eyepieces. At the end of the night I decided to show him the 28mm RKE. He was like, "woah...that's really cool!". He liked the RKE more than the more expensive eyepieces.

I will say this. They are very good eyepieces which are better than Kellners and could be debated when compared to Orthos and Plossls. Certainly nothing wrong with them. And not too many other eyepieces provide the illusion that the 28mm RKE does. I also find they do a good job for solar observing. One could probably get a full set of them for under $160 or less. Brand new it's probably better to go with a set of Plossls or Orthos other than the 28mm.
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Mounts Questions & Expirience / Re: Polemaster final alignment help
« Last post by Zachary Patterson on February 09, 2018, 11:19:24 AM »
This also happened to me - I bumped up the camera exposure a notch, and it seemed to fix it.  Not sure if that was really the cause though.
I hope the next version of the software is more like the method used in sharpcap 2.9.  So much easier:)
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Mounts Questions & Expirience / Re: Do I need APCC?
« Last post by Pablo Abreu on February 09, 2018, 11:18:34 AM »
I purchased APCC. Then I uninstalled it from my computer. That should tell you something.

Maybe the software has great functionality, but it also has one of the worst user interfaces I've ever seen. I got tired of flashing windows and error messages. (Reminds me of the scene in Apollo 13 when every light on the panel starts flashing error messages.) Just way, way too complicated. Never could completely figure out the virtual port. Worked OK when it worked but if something went wrong... After spending 30 minutes one evening trying to debug a problem I just uninstalled it and went back the standard A-P Ascom Driver V2 interface.

Maybe some day I'll try again. Not sure.

I run my AP1100 with TSX and SGPro. Works great. What I find really nifty is I plug my phone via SkyWire into the other serial port on the CP3 and use it as a hand controller via Sky Safari V Pro. Allows me to nudge the scope around while standing at the eyepiece, finder scope, or at my computer station.

MJB
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Mounts Questions & Expirience / Re: Friction drives. Potential problems?
« Last post by ciomasbure on February 09, 2018, 11:17:50 AM »
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cool, finally ... what resolution are the encoders on Ra dec, if enough it could be used to do interpolation so you can do unguided imaging ...

/Yves

No, they are not from my understanding. High resolution encoders are an option.
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Years ago, before I knew of CN, I considered getting curved secondary holders because I mistakenly thought that they eliminated diffraction. For DSO observers like me, that hardly ever look at anything bright, curved vanes are not worth the trouble or expense.



The essence of the matter. Your habits and preferences rule this choice too.
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I would get a TV 32mm plossl. It will handle the f5 focal ratio better. Excellent examples come up in the classifieds frequently.
-Rob
Why do you think a Plössl gets better if it's from TeleVue?
Because ALL Televue plossls are corrected down to F4 , if theres something going on in the eyepiece , its 'your ' eyes normally at f5 in a 6inch. . The ES 24-68 for widest fov at a 5mm exit pupil , My astigmatismis pretty bad at 5mm exit pupil and light pollution is more obvious ,  so I use the Meade 20mm-68, ES same glass , different wrapper
TeleVue does not claim that their Plössls were corrected down to F/4. TeleVue makes outstanding eyepieces, but please don't make them better than they really are. At F/6 the TeleVue Plössls have noticeable off-axis aberrations - at F/5 it gets worse.

My recommendation: wait and save money for the ES24/68°
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Eyepieces Questions & Recommendations / Re: ES62 5.5mm vs. DeLite 5mm?
« Last post by David Pee on February 09, 2018, 11:15:40 AM »
yes that is it
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Eyepieces Questions & Recommendations / Re: Why did you sell your Ethos?
« Last post by Chris Smale on February 09, 2018, 11:14:42 AM »
I bought the 21, 13 & 8mm Ethos eyepieces, I found them fine but I never actually viewed the full field as I didn't like moving my eye around. I will probably replace them with the Delos 12 & 8 and another N22T4
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Reflectors Telescopes Forum / Re: Coma free zone calculation
« Last post by ryepittimy on February 09, 2018, 11:13:57 AM »
Read here:http://www.telescope.../Mak-Newton.htm , specifically, "...coma is reduced to ~30% of that in a comparable paraboloid."
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