SolarChat!

Re: Full Disc 27-04-2024 Sounds hot to me! Lovely disks thanks Rainer.

Sounds hot to me! Lovely disks thanks Rainer.

Always enjoy your images thanks John

A lovely set here John

These are excellent Franco, I'm hoping the skies are blue enough for long enough, and the seeing is good enough to get the HaT out myself at some point this year.

Nice disks and pictures from the book thanks Steen

Nice results vin. Cleaning the sensor window is so much easier than doing flats.

Nice results thanks Pedro

These are great images Petr

Mark - so I'd been using an APM 107 triplet and 140 doublet previously. The 107 needed masking at G-band let alone CaK to get just an unfuzzy FD at all. The 140 seemed fine at G but needed masking at CaK, and was then OK in CaK (3nm) when viewed as a FD with masking to around 70-80mm. The Altair 12...

Did the wedge have a ND filter installed? 10ms is quite a long exposure time. There is no ND but I do have a polarizer and I'm going to have another fiddle with the angle it is set at. I'm not convinced it is set correctly yet though it's not as dark as it was. I'd remove the polariser completely. ...

These look good Arne, thanks

Re: Short Ha session 27-04-2024 Super scope and results

Super scope and results

Re: 27 April 2024 Excellent shots here Ralph

Excellent shots here Ralph

Nice shots here Sergio

Re: Farewell Animation to AR3645 et al 4/26/2024 Looking good thanks Warren!

Looking good thanks Warren!

Mark, I have setup various test combinations and did try the K-Line as you suggested but the ghost is still there. The other trail I did was to remove the ERF side of the module (mine is a straight through model) and used the Solar Wedge and the ghost persists (I had the CaK setup in the Solar Wedg...

Thanks for the report James, glad the fish were biting.

Nice disk thanks!

This was mainly a SA test to verify Altair view that I did not need to mask to control the SA at least. I'd have to disagree with Altair here, SA is an inherent feature of refractor lens design, with doublets and more so triplets in the UV. Its only a few very expensive specialist designs where it ...

Did the wedge have a ND filter installed? 10ms is quite a long exposure time.

Re: Sun of 04.26.2024 - All a movement today too!!!!!!!! Nice capture thanks!

Nice capture thanks!

Re: Full Disk of the Sun - April 25, 2024 Great disk Sean!

Great disk Sean!

Re: 26 April 2024 These are lovely Ralph!

These are lovely Ralph!

Mark, I was trying an additional reducer ring today like you mentioned but haven't looked at the images yet. I put the Baader K-Line in in as a test to see if the ghost was reduced (and was not). I didn't see the ghost change wit the reduced aperture today either. More work required. Hiya Brian. Ca...

Re: Lunt 130 Full Disc 2024-04-25 Nice outcome. The 80 is more even though.

Nice outcome. The 80 is more even though.

Nice to see what is going on thanks JAmes!

These are excellent thanks Petrus!

Re: The rest from today 4/25/2024 Great disk Warren!

Great disk Warren!

Ha ha ha!

Lovely disks thanks Rainer!

You got an excellent set here JAmes, nicely done!

Thats brilliant thanks Warren!

Good result Petr!

Good result Petr!

Re: 24 Apr 2024 Full Disk White Light Nice shot Robert!

Nice shot Robert!

Looking back at historical records the spot was actively evolving and it was 2 spots that merged into one.

I think light bridges form when a single spot splits into 2.

20240425192659_1024_aia_1600.mp4: (3.65 MiB) Downloaded 5 times

Looks promising! You will make life a lot easier for yourself in terms if seeing by stopping the scope down to half the native aperture. You will also get more contrast from it.

Lovely disks thanks

A nice set here Pedro, glad the sun is shining for you!

Nice disks Brian! Stop down the scope for the Cak instead of using the K line in addition, you will get more contrast.

Re: full disks 24/4/24 Excellent disks Rich! Great sampling.

Excellent disks Rich! Great sampling.

Re: Full Disc 2024-04-24 Nice thanks Paul!

Nice thanks Paul!

I just wish manufacturers would make affordable CaK filters instead of stuff like this for solar...

Nice cinema thanks!

Nice disks thanks John!

Good result in the conditions Warren!

Re: G-band FD 25 April 2024 Nice quick grab - mono for me!

Nice quick grab - mono for me!

Great disks thanks Nic!

Nice mod thanks Rainer

Very good disks thanks Arne, lots happening!

DavidP wrote: ↑Tue Apr 23, 2024 7:52 pm Whereas I’ve heard of others consistently using from 0.7 to 0.9.

Suggests undersampling to me if those values are being used.

Search found 42684 matches