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M51 HaLRGB

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Posts Made By: Jeff Blazey

November 29, 2010 01:00 AM Forum: Solar System Observing

Did I see the dark plume heralding the SEB come-ba

Posted By Jeff Blazey
I tell you what, I was observing Jupiter with my 7" mak-Newt this evening, being blessed with very steady and clear skies for the last couple of nights, and I was seeing a lot of activity in the SEB area at ~7:00 to 8:00 Eastern time USA. Looked like several long filaments and the band was less muted.

Maybe something IS going on.

Jeff

December 1, 2010 05:15 PM Forum: ASTRONOMY

Spanish Woman Claims Ownership of Sun

Posted By Jeff Blazey
I would agree with her claim to ownership only if she landed on it first.

January 12, 2011 09:46 PM Forum: Politics

WikiLeaks/Embassy Cable/Not Impressed:Again

Posted By Jeff Blazey
I'd like them to start digging into the UFO files.

That could be interesting and entertaining.

February 6, 2011 11:41 PM Forum: Mounts

King Kong has Arrived

Posted By Jeff Blazey
Another view

March 8, 2011 01:46 AM Forum: Mounts

King Kong has Arrived

Posted By Jeff Blazey
What a beast the Kong is. Despite the sore back, bruised knuckles and minor cuts & blood during the process, I got the bad boy installed.

Electronics check out fine but, as is the usual state of astro-life this winter, I'm waiting on the weather to dial the set up in.

Jeff

March 12, 2011 04:20 PM Forum: After Dark

8" objective dissasembly

Posted By Jeff Blazey
Like Pat says it's not terribly difficult, you just need to be careful handling the elements and mark them properly before seperating them.

Is the lens coated? Also, has the water etched the glass at all?

I too am curious why D&G is silent as they do cleanings and other service all the time.

Jeff

June 18, 2011 12:34 PM Forum: Refractors

80mm preference

Posted By Jeff Blazey
For visual or AP?

At 80 MM a well made F7.0 doublet with ED glass would be fine IMO.

June 27, 2011 08:57 PM Forum: Refractors

TOA 130 Collimation

Posted By Jeff Blazey
Ouch! That sucks. If it's coma you're seeing now, elements may have gotten de-centered or wedged.

Jeff

August 20, 2011 12:36 AM Forum: Off Topic Discussions

Russia's Answer to the F22 Raptor

Posted By Jeff Blazey
Rod Kaufman said:

I wonder how well it works...

Well, I copied this from the article

"The Sukhoi T-50 was completely designed and manufactured by Russian scientists"

Enough said.

November 16, 2011 08:42 PM Forum: Refractors

Achro, Semiapo, ED, Fluorite, etc.

Posted By Jeff Blazey
Thanks. This really shows that it IS the mating element, not the ED element that determine the color "error" for a doublet.

For example combining FPL53 and KF6 shows no real advantage over the FPL51/FK6 combo as the slopes of those two lines are almost identical. So I'd go for the cheaper glass for a given quality.

The PSK5/N-KzFSN11 combo is really interesting. Any practical problems with either glass?

Thanks again

Jeff

Jeff

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