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Reviews Section => Solar => Topic started by: ChrisLX200 on 23:03:08, 21 April, 2016

Title: Solar scope
Post by: ChrisLX200 on 23:03:08, 21 April, 2016
I have on loan a PST modded solar scope (102mm) which I did some machining on, I was impressed by its performance and what I could see (fascinating to watch/image prominences) so I though I'd dip my toe and bought a s/h Solarmax II. I've not had much luck with clear nights - maybe I'll do better with sunny days? :-)

My scope:

(http://i970.photobucket.com/albums/ae183/ChrisLX200/Astro%20-%20Solar/DSC00891_zpsyoueixbm.jpg) (http://s970.photobucket.com/user/ChrisLX200/media/Astro%20-%20Solar/DSC00891_zpsyoueixbm.jpg.html)

The PST mod:

(http://i970.photobucket.com/albums/ae183/ChrisLX200/Astro%20-%20Solar/DSC00880_zpsfepcu9vw.jpg) (http://s970.photobucket.com/user/ChrisLX200/media/Astro%20-%20Solar/DSC00880_zpsfepcu9vw.jpg.html)

ChrisH
Title: Re: Solar scope
Post by: Nomis Elfactem on 06:56:03, 22 April, 2016
Which one did you get Chris ? I'm guessing the 60?

As you know I have the modded pst but I too am looking at getting a smaller one as I miss imaging the full disk and want to take one to the Eclipse in the USA next year. Did you look at the Lunts?

S.
Title: Re: Solar scope
Post by: chris.bailey on 07:44:08, 22 April, 2016
Nice! Its a lot of fun though the old girl has been a bit quiet of late.

Chris
Title: Re: Solar scope
Post by: ChrisLX200 on 09:50:18, 22 April, 2016
Which one did you get Chris ? I'm guessing the 60?

As you know I have the modded pst but I too am looking at getting a smaller one as I miss imaging the full disk and want to take one to the Eclipse in the USA next year. Did you look at the Lunts?

S.

Yes it's a 60mm single-stack Si. I'm in the process of modding a 60mm refractor for another PST mod (not for me) which will be significantly smaller than the modded one you see in the photo.

I did look at what was available and the Lunt might have been a better option - but new prices of the Lunt 60 are very high and more than I could justify. I really want to be able to use this scope remotely and automating the focusser and tuning lever is something of a challenge. The helical focuser should be easy (I hope!) because I can just attach a geared stepper with a rubber-faced wheel pressed against the ring. This can be arranged to slip before it can do any damage in the case of travel over-run. The lever tuning is more tricky and I have no strategy yet, but again whatever method used must have a clutch of sorts to allow for slip at the ends of travel - perhaps a servo or smaller stepper (with a forked articulated lever). When I tried imaging with the PST mod scope I had the laptop outside on the pier shelf and I couldn't see a damn thing in the bright sunshine! I had to put my black scope cover over the laptop (and my head) just to see the image ;-) This won't be a problem running remotely from the Obs though.

ChrisH
Title: Re: Solar scope
Post by: ChrisLX200 on 09:57:11, 22 April, 2016
Nice! Its a lot of fun though the old girl has been a bit quiet of late.

Chris

Thanks Chris, I suppose there's always something going on though! I fancy trying to produce those animated prominence GIFs and I had considered using a small AZ tracking mount - then thought what about field rotation? That would make stacking and producing an animation covering a period of hours difficult I think. So for now I'll stick with the 10-Micron (one slightly over-mounted solar scope...).

ChrisH
Title: Re: Solar scope
Post by: chris.bailey on 10:00:29, 22 April, 2016
Chris

I used my MX a fair bit for Solar last year. Being well aligned it would keep the sun in the same spot all day. Makes animations so much easier

Chris
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