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Posts Made By: Rod Mollise

June 29, 2008 03:07 PM Forum: Digital SLR AstroPhotography

Good choice?

Posted By Rod Mollise

William Cornett said:

Considering astrophotography and am prepared to pay $900-$1500 for the body alone. Do you veterans have a preference here? Has anyone tried the Pentax K20D and have a review for it?

Hi:

The Canadian magazine Sky News has a pretty good shootout between Pentax, Canon, and Nikon.

http://www.skynews.ca/PDF/SLRcameras.pdf

My take? Stick with Canon unless you've got a whole lot of old Pentax lenses you want to use. At this time, Canon is still just better for astrophotography.

wink

July 1, 2008 09:43 PM Forum: ASTRONOMY

Yo! Skywatch Fans!

Posted By Rod Mollise

Andy Khula said:

Too bad about S&T's Kelly Beatty. Guess they've got all the genius they can use.

Yeah, that's probably what they think. My guess? They will be proven wrong. wink

July 3, 2008 10:09 PM Forum: Equipment Talk

Troubleshooting help

Posted By Rod Mollise

Kevin VerMerris said:

Best way to troubleshoot this rig? RA drive - 8 c batteries - do not have any indication of power on the hand control(no lights) Thanks for thoughts

Kevin

Impossible to say without havin' at least a clue to what "this rig" is.

HOWSOMEEVER...Step one in troubleshooting ANYTHING is always to determine you have an adequate power source and a good connection to it.

grin

July 4, 2008 02:30 PM Forum: Equipment Talk

Mak/cass

Posted By Rod Mollise

Dave Barta said:

Since most of the Mak/Cass scopes on the market use aluminum tubes,other then cost and possible weight reduction, would a carbon fiber tube help with cooling or is it the tube design that would really matter.Is anyone making a good 8-10" Mak/Cass with a carbon fiber tube?

Thanks
Dave

Carbon fiber tubes have one advantage: less expansion and contraction. That is important for imagers trying to maintain focus over the course of the evening. The weight savings are minimal and cooldown is WORSE.
8)

July 5, 2008 02:15 PM Forum: Off Topic Discussions

Mexican Coca Colas better?

Posted By Rod Mollise

Darian Rachal said:

Recently, I was browsing through the Mexican food section of our local Super 1 and I noticed these Coca Colas bottled in Mexico, in a couple of sizes(approx. 12 and 16 ounces). A stick-on label mentioned they were made with cane sugar. I believe the US cokes are made with fructose or sucrose. I bought one and it "seemed" to remind me of the way Cokes used to taste. The bottles were also "Retornable", at least that was printed on the bottle. I've not checked with Super 1 to see if they are.

Can anyone verify that they taste better or perhaps it was just my imagination, since they were from exotic Mexico?

I've thought so too, but always figgered it was the water.

wink

July 8, 2008 12:06 PM Forum: Beginning Astronomy?

Fork mount dec circle setting?

Posted By Rod Mollise

Joe Hoener said:

Are these kinds of errors tuned out during drift alignment? Thanks!

Yes.


July 8, 2008 12:08 PM Forum: Equipment Talk

Equipment hounds take note

Posted By Rod Mollise

Greg Nowell said:

WSJ article on splurging on special items. Astronomy buffs will draw the appropriate conclusions. Greg N

July 7, 2008, 12:11 pm
Splurging Is Good for Your Health

Buying overpriced indulgences may feel good in the short term, but you pay the price later. Or at least that’s the conventional wisdom.

But a study by a couple of business-school professors says splurging now makes you happier later. Even more surprising: Not splurging now gives you pangs of regret later.

I say buy what you need/want/can afford/will use. HOWSOMEEVER...don't discount Mr Spock's observation, which I find is all too true with regard to some of the gear I have purchased over the years:

"After a time, you may find that having is not so pleasing a thing, after all, as wanting. It is not logical, but it is often true."

wink

July 8, 2008 12:13 PM Forum: Refractors

AT66, WO66 and Astrotelescopes 66ED

Posted By Rod Mollise

Edward Wiley said:

Any one have any information on the 66ED being offered by Astrotelescopes, an ebay dealer? It looks like the AT66ED and the WO66ED. Perhaps all are made by Long Perng?

Could be. Who knows? I've never heard of this dealer, and my Spidey Sense tells me: "Don't buy telescopes on Ebay."

I'd stick to AT or WO, bubba.

8)

July 9, 2008 11:38 AM Forum: Equipment Talk

Buy Meade Lx 90 ACF or Celestron CPC

Posted By Rod Mollise

Jay Martin said:

Hi,
I know it has been asked in various forms before,but before I buy again with my hard won $money I was hoping someone who is familiar with both scopes can give me sound advice.
Fortunately, advice is free on this forum of great folks!!
I am moving up from a Celestron CPC 800 which I really liked.

Should I now buy the Meade LX 90 ACF ten inch or the Celestron CPC 1100 eleven inch ???

They are very close in price. The Meade is $100 cheaper but is throwing in some extra stuff with a new purchase which I might be able to resale for a $100 or so. The CPC 1100 is large in aperature but look like it is around 14 pounds or more in weight. Thanks for any freely given opinions.
Jay

I like the LX90 VERY much. HOWSOMEEVER, Meade is currently having problems with that scope's declination drive. I wouldn't jump right now.


July 9, 2008 11:43 AM Forum: Equipment Talk

How long should a scope last?

Posted By Rod Mollise

Kevin VerMerris said:

Just curious as what the lifespan is? Especially the mounts with the goto and gps. I know alot depends on the care they receive, but do optical coatings fail?

As Joe says, coatings will last a Real Long Time. At the university where I teach, I have a 1973 Celestron Orange Tube. Undoubtedly its primary and secondary have lost a little oomph over the years due to oxidation, but they still look as bright and shiney as ever and decliver good images.

Electronics. That's harder to quantify. Assuming they go the first 8 hours, and nothing bad happens (power spikes and surges, lightning, shorts) they should last a long time as well.

Chances are you will want a new scope before the old one gives up the ghost.

8)