Thats a good idea Mark ... I'm currently looking at the 80mm hinged pair as I know someone who

is selling a set to see if they are any larger ?

Thanks ... Brian

Hi Rainer

I have the non hinged Primaluce 80mm set and thought that each/either side of the rings would

equally take the extra small gap but the rings are too small and the OTA will not fit into one

or both of them at all even with felt removal .... which is a pity as they are superb !

Brian

Hi Folks Does anyone know (apart from Meade) where I could obtain tube rings to fit an SM60 the diameter of the OTA is 81.5mm now I've looked into a couple of options and the primaluce Lab 80mm rings do not fit , the OTA appears to be a slightly awkward size so any help would be great , I may even b...

It's ok I'm a wassock as I hadn't pulled the plate forward

Brian

Ah don’t know what I’ve done here ! But it’s one of those I wish I’d left alone ! I took of the rubber grip to expose the small screw and loosened it ... now the tilt will go a long way and won’t stop plus I can’t seem to be able to relocate the small screw into any location where it will take hold....

Yes prominences do appear more 3 dimensional when DS I think but I'm just going with different things this summer , I'm using higher mags than I'd normally do to ! Thanks for the detail on the PST Alexandra ... I had seen it before under the rubber cover but didnt know what it was for , I may have a...

I think that is a bit peculiar with regard to the solarscope in single stack ... I admit my only experience with them is in SS mode but here the view was perfect and all on band , of course the classic procedure is to tune the SS to most contrast before adding the DS unit , on a foot note I've reall...

I didn't or hadn't realised that a solid etalon could de-contact

It's obviously always a risk with the much more fragile air spaced etalons

Brian

It's Tuesday

Brian

Nor I at least I'll be able to try its quark in other configurations

Presently it would make a great wee imaging scope if so inclined

Brian

marktownley wrote: ↑

Mon Jun 01, 2020 2:45 pm

Is taking it apart an option?

It is Mark and I don't normally but it's coming to that ... I think it's a good wee scope

and I just know there is more to be squeezed out of it , mobile quark ect

Brian

Hi Folks I bought a used 60SS last Autumn and have quite liked it ... however I have found that it's only really usable with a 25-30mm EP & here the image becomes just bright enough but does display reasonably good surface detail , I read a lot now that many consider theirs to be too bright and of c...

Very interesting thread ... I've been thinking about removing the quark from my 60SS However mine displays quite a dark image compared to these , it does offer good surface detail when the seeing is ok ... the quark unit simply unscrews from the 80SS but would also require an adaptor of sorts. Brian

Wow amazing work me thinks ! all captured with a PST etalon at its heart

Incredibly sharp images

Brian

https://www.hpb.com/products/imaging-the-sun-using-a-digital-spectroheliograph-9783319248721 Is this the book Ken ? And thanks Bob ..... great to hear from you to 👍 Oh and I had long since forgotten about that CN thread also ....... my relatively insignificant thread has turned into something quite ...

Thanks John

I had read Colinskis detailed reports before but had long since forgotten about

them

Brian

Many Thanks All

But I'm still looking for something that's perhaps a little less highbrow if possible ?

Brian

Thanks Pedro

I have looked at Christians site before but I don't think it's necessarily for beginners though.

Brian

Hi Folks

I have been asked for a link to info on etalons in general ... say air spaced v solid or just

a general understanding of bandwidths and how etalons operate.

If anyone can advise on some info on here then that would be great

Would be good for me to read as well

Thanks .... Brian

You havn't lived unless you've been through a few boa's

Last time my mate was using a car oil filter wrench constrictor on his & my PST

Brian

Shown is the EP holder & Spacer assembly

BF6mm on the left and the ITF (prone to
oxidation) on the right.

Brian

Thanks Mark .. I doubt the etalon itself would reduce the transmission enough by bouncing it around having to cope with that kind of intensity ... I was thinking the erf could be by the BF like the PST but of course the SMs are all in a regular diagonal format .. I reckon I'll stick with the 60 in D...

James I do think the calcium wavelengths are worth looking 😉 into , however as always caution is advised. My own experience at 495nm is very limited .... approx 14 yrs ago I did have a Cak PST ... couldn't see a thing but it was amazingly good for imaging .... around the same time I obtained one of ...

I see Pete tested it Mark (he used to image with an DSSF70 as I recall) beautiful scope !! Funnily I read this review only last week as was considering one Yeah the stand alone SMII 60/90s OTAs do not have the red rg630 erfs but must have a means of rejection , if you can check your 90s objective th...

Thanks Andrew That all sounds very interesting .... I have a 60mm DS and like its convenience and user friendly- ness over the quarks which I always found to be hard work at the EP. I understand now ...... your effectively stepping your 100mm with a reducer down to about a 930mm FL of the 60DS in or...