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Equipment Discussions >> Classic Telescopes

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orion61

*****

Reged: 10/20/07

Loc: Birthplace James T Kirk
Re: my new(?) Criterion RV-6 new [Re: Bonco]
      #6148746 - 10/20/13 05:31 PM

I still have my RV6, needs recoated now, I ground down my large Primary clips, so instead of about 6 or 8 defraction spikes I have 4 now and it has helped contrast. Don't be surprised if it gives that C8 a run for the Money on Planetary!
Larry Beach


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GeneT
Ely Kid
*****

Reged: 11/07/08

Loc: South Texas
Re: my new(?) Criterion RV-6 new [Re: Mkofski]
      #6148812 - 10/20/13 06:06 PM

A RV-6 is a true classic. Maybe think about keeping it.

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Mkofski
Pooh-Bah
*****

Reged: 07/19/11

Loc: Greenfield, Indiana, USA
Re: my new(?) Criterion RV-6 new [Re: Bonco]
      #6148844 - 10/20/13 06:23 PM

Bill,

Thanks for the tips. My plan right now I'd to just clean up the tube not removing the spider or primary. Looking down the tube, the primary looks great. I just started getting into the mount. I am going to repaint the pier and mount, replace the cork if needed and re-grease it. I think that's about all I'll be doing.

Mike


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Mkofski
Pooh-Bah
*****

Reged: 07/19/11

Loc: Greenfield, Indiana, USA
Re: my new(?) Criterion RV-6 new [Re: orion61]
      #6148857 - 10/20/13 06:28 PM

Quote:

I still have my RV6, needs recoated now, I ground down my large Primary clips, so instead of about 6 or 8 defraction spikes I have 4 now and it has helped contrast. Don't be surprised if it gives that C8 a run for the Money on Planetary!
Larry Beach




Larry,

You are right about the planetary performance. My C8 still needs collimated. Be only had it out 2 time since I got it back from you and neither time in good seeing. I do like the RV-6... it is a little long for me but on a short mount and tripod the eyepiece isn't in too bad a position. I used it on my iOptron z25 mount which is quite short. Looks funny on that little mount but does work well.

Mike


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Mkofski
Pooh-Bah
*****

Reged: 07/19/11

Loc: Greenfield, Indiana, USA
Re: my new(?) Criterion RV-6 new [Re: GeneT]
      #6148874 - 10/20/13 06:36 PM

Quote:

A RV-6 is a true classic. Maybe think about keeping it.




Gene,

I'm real impressed with the performance on the Moon and some doubles I checked out the only night I have gotten it out. I rarely have a scope more than a year but this one could very well be a keeper. I'll continue using it on a modern mount. The iOptron zEQ25 I have is only about 3 feet tall (tripod and mount) and is a good size for the RV-6. I'll get use to the focuser. The only thing I'd like to change on the scope are the rings. I'd like to get some rotating rings. I am keeping everything as original as possible.


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orion61

*****

Reged: 10/20/07

Loc: Birthplace James T Kirk
Re: my new(?) Criterion RV-6 [Re: Mkofski]
      #6148878 - 10/20/13 06:39 PM

They are a bit crude compared to some fancy Refractor scope but the performance is not crude by any means!

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greedyshark
professor emeritus
*****

Reged: 10/31/05

Loc: 3rd Rock
Re: my new(?) Criterion RV-6 new [Re: Mkofski]
      #6149896 - 10/21/13 01:31 PM

Quote:

Quote:

I still have my RV6, needs recoated now, I ground down my large Primary clips, so instead of about 6 or 8 defraction spikes I have 4 now and it has helped contrast. Don't be surprised if it gives that C8 a run for the Money on Planetary!
Larry Beach




Larry,

You are right about the planetary performance. My C8 still needs collimated. Be only had it out 2 time since I got it back from you and neither time in good seeing. I do like the RV-6... it is a little long for me but on a short mount and tripod the eyepiece isn't in too bad a position. I used it on my iOptron z25 mount which is quite short. Looks funny on that little mount but does work well.

Mike




Yep...RV-6 contrast should easily best a C8.

Charles


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Bonco
Post Laureate
*****

Reged: 04/17/06

Loc: Florida
Re: my new(?) Criterion RV-6 new [Re: greedyshark]
      #6150314 - 10/21/13 05:53 PM

After my purchase of the RV6 back in the day, my next purchase was a C8. I was not a happy camper and sent it back to Celestron for warranty check and collimation. When it came back, still the RV6 provided noticably better planetary views and cleaner star images. Sold the C8, still have the RV6. So optically the RV6 was superior, however the mechanics on the C8 were vastly superior. Go figure.
Bill


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Mkofski
Pooh-Bah
*****

Reged: 07/19/11

Loc: Greenfield, Indiana, USA
Re: my new(?) Criterion RV-6 new [Re: Bonco]
      #6150444 - 10/21/13 07:23 PM

Quote:

After my purchase of the RV6 back in the day, my next purchase was a C8. I was not a happy camper and sent it back to Celestron for warranty check and collimation. When it came back, still the RV6 provided noticably better planetary views and cleaner star images. Sold the C8, still have the RV6. So optically the RV6 was superior, however the mechanics on the C8 were vastly superior. Go figure.
Bill




Bill,

Size wise I sure do like the C8 but so far the RV-6 is a better performer. In fairness to the C8, I haven't had it out often and never when there was good seeing so it still needs collimation. The only problem I see with the RV-6 is it's length. With any wind I don't think my main mount will handle it as well as the C8. I've gotten spoiled using short refractors the last year but I do want a scope good for higher magnifications.

Mike


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