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Celestron OMNI XLT 102 First Light

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#26 newtoskies

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Posted 14 January 2013 - 09:44 AM

Sure does, thanks for the link.

#27 Gary Riley

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Posted 14 January 2013 - 08:58 PM

Soliari,
I have the XLT 102 as well and I have used a Baader Hyperion 5mm with several times. I have noticed that the image of Jupiter appeared a little "soft" compared to lower magnifications. Could have been due to the "seeing" or transparency. But more likely that I was reaching the limit of it's capacity at around 200X.

Gary

#28 soliari

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Posted 15 January 2013 - 12:29 AM

Thank you Gary. It's nice to know someone is out there pushing the optics of this scope. From all the searching I thought I was going to have to settle for 160x. I think I'll try to push mine.

#29 BoriSpider

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Posted 15 January 2013 - 09:09 AM

I, too, use a 5mm UO HD ep every-so-often. Not much though.
And if I lucky I can barlow my 8mm radian for 250x.

#30 soliari

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Posted 15 January 2013 - 11:32 AM

250x out of this OTA? That's impressive. I keep hearing how the 102mm diameter just does not gather enough light for magnifications beyond 160 ... so happy to hear it's possible even if not very often probable.

Thank you gents.

#31 Mike4242

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Posted 15 January 2013 - 05:00 PM

On nights of good seeing I get very good views with the Omni 102 at 222x using a 4.5mm Meade HD-60. On nights of average seeing 150x-180x is about the max I go.

#32 greyfox

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Posted 15 January 2013 - 08:30 PM

Hey everyone:

As an OXLT 102ED owner, I read this thread with great interest. I'm curious - the OP says three meteors crossed the field of Capella in formation....is it possible he viewed those spy satellites (forget the names) that cruise around in formation? I would look myself but I forget what those things are called....but I'm wondering if they crossed the field at his exact moment of first-lighting.

Otherwise, great report. I enjoyed reading it.

Brad

#33 csrlice12

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Posted 15 January 2013 - 08:33 PM

Haven't really taken mine below the 6.7mm yet (nice views with it though). I believe the scope is more than capable of higher mag, it's the weather that's been the problem.

#34 Zamboni

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Posted 15 January 2013 - 09:28 PM

Hey everyone:

As an OXLT 102ED owner, I read this thread with great interest. I'm curious - the OP says three meteors crossed the field of Capella in formation....is it possible he viewed those spy satellites (forget the names) that cruise around in formation? I would look myself but I forget what those things are called....but I'm wondering if they crossed the field at his exact moment of first-lighting.

Otherwise, great report. I enjoyed reading it.

Brad


I think the name of those is "Whitecloud" satellites.

#35 greyfox

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Posted 15 January 2013 - 10:26 PM

Yeah...not spy sats (per se) but NOSS ELINT "triplets"....

If I had to venture a guess, thats what he saw. Talk about luck!

#36 Zamboni

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Posted 15 January 2013 - 11:00 PM

No kidding! I've seen these before, but not crossing the FOV. Must be a heckuva sight!

#37 newtoskies

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Posted 16 January 2013 - 10:42 PM

Great to hear the question and comments about pushing mag with this scope. I got mine on Friday and it's been cloudy since. I was thinking today of what would be the highest mag with this OTA. I'll be ordering the Paradigim ED 12 and 18mm and will be getting the TMB 9mm. I can 2x Barlow the ED EP's but wasn't sure if it would be worth trying the 9mm and Barlow.

#38 GOLGO13

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Posted 17 January 2013 - 03:34 PM

The general rule of thumb is 60x per inch of aperture as a max. That would require perfect conditions (seeing, cooldown, etc.). Your 1000 focal length scope with the 9mm would be 111x (nice medium mag). With a 2x barlow you are looking at 222x. Pretty much maxes out your scope. But it's within the 60x per inch range. I'd say it should work in perfect conditions. In general with that scope you'd probably want to stay around 180x for high magnification.

I think the moon handles magnification well...so certainly try 222x on the moon...and planets on a good day of seeing (not much twinkling in the stars).

#39 newtoskies

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Posted 17 January 2013 - 07:57 PM

ah thanks for the great info. I'll be seeing my friend this weekend who lives at a dark zone and will take the scope with me just in case.
With the 12 and 18mm and barlow I'll be at 166 and 110, still below the 200+ mag. These and the 9mm barlowed on my Dob will be way too much.

#40 GOLGO13

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Posted 17 January 2013 - 09:59 PM

Think it's about the same for your dob. 133x and 266x. Your dob's theoretical is 300x, but again I would stay closer to 200-240x most of the time.

Always worth a try to go high power, but in general low to medium power is best. A larger scope can handle more mag...but unless it's got tracking, it can be a pain to manually track (such as a non-motorized dob).

#41 Rob55

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Posted 18 January 2013 - 09:28 AM

Mike

Appreciate your post. It gives me a much better plan for developing my EP collection.

#42 Rob55

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Posted 18 January 2013 - 09:45 AM

Earlier poster uses 4.4mm on a good night.

#43 Rob55

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Posted 18 January 2013 - 09:57 AM

Spy satellites?! never even considered it. But what are the chances three meteors would be moving in the same direction at the same time close enough to be seen through the eyepiece. And, yes, this was the very first time and target for my scope. I an an absolute complete novice. The sighting was pure unplanned accident. :ooo:

#44 csrlice12

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Posted 18 January 2013 - 11:32 AM

When beginning, a lot of the things I saw was pure unplanned accident........... :lol:

...and sometimes it still is......

#45 Rob55

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Posted 18 January 2013 - 11:59 AM

The 1.25" 13 mm arrived in the mail yesterday, and not a moment too soon. Social obligations prevented my setting up the scope last night, but viewing conditions were beautiful. Luckily the trash can filled three times and I took my time taking it out. The moon was awesome. Orion fully visable. I was praying conditions would be good in the morning as Saturn should be lurking in the sky.

180545FEB13 35 F hazy and dawn's light is rimming the East. The big dipper is fully visable. Sighted Dubhe and Merak for the first time with the 25mm and switched to the 13mm. It wasn't too impressive a difference. The lens did increase the size of the stars slightly and I noticed no significant dimming of the ep. Stars go right to the edge of the FOV without any significant change when they drop off. The lens has a few darker spots on it. Makes me wonder about cleaning. I'll have to research that. It did give me opportunity to fine tune the finder scope and observe the impact turning the knobs had at higher magnification. Anyhow fished it out of D Bay for $15 and free shipping, and it is zero calories, sodium and fat free.
I didn't think the 13mm was going to make the dipper that interesting and I set up to see Saturn.

When I turned South there were only two bright objects in the Graying sky: Spica? and Jupiter? I'm still stumbling around here. Some other stars are visable, but fading fast. Well, Left, East is bigger and brighter; Let's see. The transition from looking over the tube to the finder was easy. In the 8x finder it looks like a star.I have my doubts. Then to the 25mm. I see rings, well ring, and there was definite separation between the ring and the planet. I cannot believe how happy this makes me. Then I switch to the 13mm, Wow! That made a difference, twice the size. Barely visable lines of separation fade in and out in the rings defining the outer third. No noticable color. Two companion stars are visable to the left through the finder, West? I tracked Saturn for about 45 minutes while occasionally scanning the SSE horizion looking for Venus or Mercury to no avail. Well maybe next month. When I quit Saturn and stars were still easily visable through the scope but Saturn was barely visable to the naked eye.
This could become addicting. Predicting clear skies tonight. Happy MLK weekend.

#46 csrlice12

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Posted 18 January 2013 - 12:22 PM

"This could become addicting."

Nah, it's just habit forming.......

#47 newtoskies

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Posted 18 January 2013 - 02:08 PM

Very cool to read this report.Now I can't wait to use my 102 and the two new ep's. Looking forward to seeing Saturn too.

#48 Rob55

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Posted 19 January 2013 - 12:12 AM

First look at the moon tonight. Used the lens cover to stop the scope. It really helped contrast. My wife looked through for the first time. She loved it. After the moon we went to Jupiter. Seeing was good and I put in the 13mm ep then told my wife to have a look. She bent to the ep and not being one given to hyperbolic statement she said. "holy s*it!" I think she liked it. :jump:

#49 newtoskies

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Posted 20 January 2013 - 12:15 PM

Very cool Rob. My wife said the same when I first bought my dob and showed her the moon and then Jupiter. I had my first ( real) light last night with the 102 and loved it. I'm waiting for my paradigm ep's to arrive, hopefully on Tuesday,and see how those work out. I posted my first light in the beginner forum.

#50 Rob55

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Posted 21 January 2013 - 09:43 PM

I will check out the first light. Let me know how you like the EP.






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