Search found 15 matches

by pmlogg
Sat Jun 25, 2016 8:07 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Very sorry for the delay in responding - an unexpected hospital stay! I took 17 series: - Single stack with each SM60II with/without IR/UV cut and with BF5 or BF10. - Doublestacked SM60II with/without IR/UV cut and with BF5 or BF10. - One single stack SM40 with IR/UV cut and BF10. - Double stacked S...
by pmlogg
Fri Jun 17, 2016 3:20 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Mark

I'll have to check whether the filter in my Baader LRGB set is UV/IR cut. I'd need to extricate it from the filter wheel sandwiched between my SBig camera and AO unit.

Thanks

Peter
by pmlogg
Fri Jun 17, 2016 10:35 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Alexandra Yes, that wasn't too bad. If the sun returns to Scotland this weekend I'll aim to have another go. Mark I think the Blocking filter is OK - the views with the SM40s remain as before, and as expected. I do have a BF5 that needed a new ITF. I took the advice, which I think came from you on r...
by pmlogg
Wed Jun 15, 2016 4:33 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

I agree that it's awful. I'll have another look at what I've had double-stacked. This is a segment of a shot done single-stacked with one of the SM60 II on the FS-60CSV at the recent transit of Mercury.
by pmlogg
Sun Jun 12, 2016 3:26 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Alexandra Sorry for the delay in replying. Some difficulties with software to show samples. Attached just two. One DS with the SM60II the other with the SM40s. Both shots screen captures of single AVI frames with no processing. The difference between the two more stark than yours; almost no detail w...
by pmlogg
Sun Jun 12, 2016 3:02 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: 'Clocking' Adapter for SM60
Replies: 4
Views: 3850

Re: 'Clocking' Adapter for SM60

Bob Thanks for that - I'm more than a bit sad that the SM60 IIs may themselves be the weak link. I'm about to post images on my other thread on the subject. I had read and followed your advice on testing the tilt on the etalons, combined with advice on adjusting the pin position of the RichView tune...
by pmlogg
Tue Jun 07, 2016 5:59 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Could you elaborate on the FWHM? Saturday turned out to be better than predicted so I had a go at re-locating the pins, each single etalon in turn. I followed the suggested procedure and positioned the pins at mid-points. The results were that one had no tilt, the other a small amount; in both cases...
by pmlogg
Tue Jun 07, 2016 5:38 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: 'Clocking' Adapter for SM60
Replies: 4
Views: 3850

Re: 'Clocking' Adapter for SM60

Mark

Thanks for that. I've identified a couple of local contacts to see what it would cost to get it made. I'm concentrating now though on trying to sort out why the views through my SM60 IIs are poorer than through the SM40s. So far no joy with that.
by pmlogg
Sat Jun 04, 2016 9:33 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Many thanks for the suggestion on the pin. I've now taken delivery of the TV-76 and it's ready to go. Tomorrow is supposed to be sunny here so I'll have a go with it - and take images as per rxdeath's suggestion if I don't see a distinct improvement.
by pmlogg
Thu Jun 02, 2016 5:20 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

Re: SM60 II views poorer than SM40s - Why?

Thanks for that suggestion. I'll take some images and post them. Although I've seen pictures and reports of the FS-60 being used with SM60 I'm not certain whether they were SM60 or SM60II nor whether alignment is more likely to be an issue with double-stacked SM60II than SM60. Certainly there are ad...
by pmlogg
Thu Jun 02, 2016 11:16 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60 II views poorer than SM40s - Why?
Replies: 16
Views: 6975

SM60 II views poorer than SM40s - Why?

Since upgrading from SM40 to SM60 etalons I've been disappointed by results. Yesterday I tried to be systematic, following the advice by Board Members on tuning pairs of etalons. Despite that I was underwhelmed by the view I was getting. So I dismounted the pair of SM60 IIs and put on my pair of SM4...
by pmlogg
Thu Jun 02, 2016 10:42 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: SM60II Richview - Purpose of front threaded element?
Replies: 0
Views: 9674

SM60II Richview - Purpose of front threaded element?

When trying to adjust contrast with my pair of SM60 IIs the threaded ring on the front of the rear SM60 II (forward of the Richview tuner) loosened slightly. I had wondered whether these were removable - they look so similar to the SM60 double stack adapter. When finished viewing I split the pair of...
by pmlogg
Fri May 27, 2016 12:59 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: 'Clocking' Adapter for SM60
Replies: 4
Views: 3850

'Clocking' Adapter for SM60

I noted with interest the discussion of 'clocking' adapters for use when double-stacking. This is an impression of what I thought might work as a clocking adapter for two SM60 II's. The front etalon of the pair would screw into the one end of the adapter, internally threaded for 82x1.0mm. The adapte...
by pmlogg
Fri May 20, 2016 8:24 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Adapters for Front-mounted Solarmax Etalons
Replies: 2
Views: 2951

Re: Adapters for Front-mounted Solarmax Etalons

Thanks for that. The adapter is a very tight fit. Hopefully I'll be able to find someone to machine it to accept SM60 at a sensible price. The etalons are actually SM60 IIs so the adapter isn't needed (although I do have one) and luckily both have T Max tuners. I'm needing though to work on the tuni...
by pmlogg
Thu May 19, 2016 1:16 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Adapters for Front-mounted Solarmax Etalons
Replies: 2
Views: 2951

Adapters for Front-mounted Solarmax Etalons

When I switched from a PST to a pair of SM40 etalons on my FS60CB I didn’t have an adapter so I made one that slid on over the fixed, screw-on dew shield. That worked fine but I then upgraded to SM60 and found issues with sag, which needed careful positioning of the slide-on adapter and etalon to av...