Search found 18 matches

by Okay-1
Fri Dec 07, 2018 3:19 am
Forum: Solar Scope Modifications
Topic: Dimensions of 40mm SolarMax II H-Alpha Double Stacking Etalon
Replies: 0
Views: 113

Dimensions of 40mm SolarMax II H-Alpha Double Stacking Etalon

Hi, I'm wondering if anyone can direct me to a site that shows the external dimensions (including thread sizes) for the (Meade) Coronado SolarMax II H-Alpha Double Stacking Etalon Solar Filter (40mm ). Failing that, anyone have one that they could measure? My main concern is the external diameter - ...
by Okay-1
Mon Mar 26, 2018 5:36 pm
Forum: Solar Scope Modifications
Topic: C11 ERF-Concept
Replies: 12
Views: 1167

Re: C11 ERF-Concept

Thanks Mark, Yes I agree... " Experiment is King!"... often too many talkers without proof. Now in retrospect, the results makes sense; chopping up the aperture would cause diffraction effects that would lead to a loss of contrast. The only thing I wonder about is resolution. The masked C11 has the ...
by Okay-1
Mon Mar 26, 2018 3:37 am
Forum: Solar Scope Modifications
Topic: C11 ERF-Concept
Replies: 12
Views: 1167

Re: C11 ERF-Concept

Well I made a mask for my C11. First attempt - Original Mask. Original Mask 950.jpg I suspected that the rough edges were contributing to image blur so I modified the mask using black tape to cover the edges of the holes. Second Attempt - Modified Mask Modified Mask 950.jpg Here's the results on the...
by Okay-1
Sat Mar 10, 2018 6:34 pm
Forum: Solar Scope Modifications
Topic: C11 ERF-Concept
Replies: 12
Views: 1167

Re: C11 ERF-Concept

Hi Mark, Nice to hear from you again. RE: Yes, these ideas keep doing the rounds... Yes but they never seem to push through to a final image... unless I missed something. RE: You will get a fantastic starburst effect firstly with the pattern of sub apertures - try it on the moon and see. I would exp...
by Okay-1
Fri Mar 09, 2018 8:40 pm
Forum: Solar Scope Modifications
Topic: C11 ERF-Concept
Replies: 12
Views: 1167

C11 ERF-Concept

This modification of solar telescope has been moved from cloudynights.com to solarchatforum.com. I'd like to use my C11 for Ha solar imaging... but the full aperture Energy Rejection Filters (ERFs) available as quite expensive - think US$ 2K+. I was wondering if I could accomplish the same thing wit...
by Okay-1
Tue Aug 08, 2017 8:43 pm
Forum: Solar Scope Modifications
Topic: Have Etalon Will Travel
Replies: 5
Views: 878

Re: Have Etalon Will Travel

Oh, today I got a chance to test the portable etalon on my CT152, with an without a 2 inch 2X Televue Powermate.
All worked out OK... needed some extensions but I expected that. I'm happy!
by Okay-1
Tue Aug 08, 2017 8:39 pm
Forum: Solar Scope Modifications
Topic: Have Etalon Will Travel
Replies: 5
Views: 878

Re: Have Etalon Will Travel

Yikes... how did I miss all those in my search?
Maybe I was blind to adapters in the 38 Euro (CDN$57) range? :lol:
by Okay-1
Mon Aug 07, 2017 12:06 pm
Forum: Solar Scope Modifications
Topic: Have Etalon Will Travel
Replies: 5
Views: 878

Re: Have Etalon Will Travel

Jeez Mark, it's like you are everywhere! :lol:
Once the rain and clouds disappear I will be able to try this out... should prove interesting.
by Okay-1
Mon Aug 07, 2017 12:01 am
Forum: Solar Scope Modifications
Topic: Have Etalon Will Travel
Replies: 5
Views: 878

Have Etalon Will Travel

E1.jpg Ever wish you had a portable etalon? One that you could move from one scope to another? If so, please read on… as I show what I did to achieve this. My Story I have a LUNT LS50 solar telescope. E2.jpg I specifically bought the Lunt LS50 after measuring the diameter of the tube and verifying ...
by Okay-1
Thu Jan 05, 2017 9:28 am
Forum: This is SolarChat !!
Topic: Full Disc White Light 04/01/17 + Data
Replies: 3
Views: 250

Re: Full Disc White Light 04/01/17 + Data

Wow - just look at all that solar activity! Sorry... couldn't resist; nice images though.
by Okay-1
Thu Jan 05, 2017 3:43 am
Forum: Solar Scope Modifications
Topic: How to Calculate Sun diameter inside Light Cone?
Replies: 10
Views: 1612

Re: How to Calculate Sun diameter inside Light Cone?

Brett - thanks for posing the questions. Merlin66 - thanks for all the answers. This Thread has been very useful to me - revealed that replacing the 50mm objective lens of my Lunt LS50 with a Televue 2X Powermate and then breach loading the Lunt scope into my Canadian Telescope 152mm would require a...
by Okay-1
Thu Jan 05, 2017 3:25 am
Forum: Solar Astronomy Equipment Reviews
Topic: Baader D-ERF Review
Replies: 1
Views: 1302

Re: Baader D-ERF Review

Good review Mark - Thanks Rick
by Okay-1
Tue Jan 03, 2017 6:30 am
Forum: This is SolarChat !!
Topic: Todays Sun 11NOV2016 Unenhanced FD
Replies: 19
Views: 1655

Re: Todays Sun 11NOV2016 Unenhanced FD

Jim and Mark, thank you both so much for your help.
Jim, this thread of yours is now a great reference and will hopefully put an end to much of the misinformation out there.
Great Job Guys!
by Okay-1
Tue Jan 03, 2017 1:03 am
Forum: This is SolarChat !!
Topic: Todays Sun 11NOV2016 Unenhanced FD
Replies: 19
Views: 1655

Re: Todays Sun 11NOV2016 Unenhanced FD

Ha, ha... this is great fun. Regarding your question Jim, "I hope this helps answer some of the questions you had?" Yes, at last! With these image comparisons and the image processing results, I believe I have the answer to my main question, that I posed on the Cloudynights forum, "Where's the Photo...
by Okay-1
Mon Jan 02, 2017 9:18 pm
Forum: This is SolarChat !!
Topic: Todays Sun 11NOV2016 Unenhanced FD
Replies: 19
Views: 1655

Re: Todays Sun 11NOV2016 Unenhanced FD

Oh yes, "B" is noiser, let me denoise that a mite and call it "C". There, now what do you say?
Mono Color-2 9.jpg
Mono Color-2 9.jpg (783.29 KiB) Viewed 1419 times
by Okay-1
Mon Jan 02, 2017 3:16 pm
Forum: This is SolarChat !!
Topic: Todays Sun 11NOV2016 Unenhanced FD
Replies: 19
Views: 1655

Re: Todays Sun 11NOV2016 Unenhanced FD

I want to thank marktownley for directing my attention to this Thread and to the 'friendly' solarchatforum.com. With Albuqshutterbug's tacit 'maybe OK' (thanks Jim) I processed (for surface detail only - not prominences) his first two unprocessed images, one from the color camera and one from the mo...