Search found 23521 matches

by marktownley
Thu Apr 26, 2018 11:07 am
Forum: Solar Scope Modifications
Topic: Can i use my EDGEHD800 for Ha?
Replies: 5
Views: 47

Re: Can i use my EDGEHD800 for Ha?

Interesting PDF!
by marktownley
Thu Apr 26, 2018 10:52 am
Forum: This is SolarChat !!
Topic: High res Ca K image with TOA150 on April 24
Replies: 4
Views: 14

Re: High res Ca K image with TOA150 on April 24

These images are very impressive! I'm very envious of your seeing.

What sort of changes are you doing with your filter?
by marktownley
Thu Apr 26, 2018 10:48 am
Forum: This is SolarChat !!
Topic: Quick CaK Full Disk 26th April
Replies: 3
Views: 16

Re: Quick CaK Full Disk 26th April

Thanks guys!

I hope I get some good seeing too. These early mornings are my best window of the year, but need another month or so for it to clear the rooftops a bit more and get higher in the sky.
by marktownley
Thu Apr 26, 2018 9:09 am
Forum: This is SolarChat !!
Topic: Crepuscular Sunset
Replies: 2
Views: 9

Re: Crepuscular Sunset

These look excellent Derek, thanks for sharing!
by marktownley
Thu Apr 26, 2018 8:40 am
Forum: This is SolarChat !!
Topic: Quick CaK Full Disk 26th April
Replies: 3
Views: 16

Quick CaK Full Disk 26th April

Managed to grab a quick CaK full disk before leaving for work today - 20 minutes later sky went from cloud free to total cloud cover. Taken with the 40mm f10 at ~500mm focal length with the homebrew CaK filter and the PGR Chameleon 3 camera. https://farm1.staticflickr.com/908/41710774481_55366a6a60_...
by marktownley
Thu Apr 26, 2018 5:17 am
Forum: This is SolarChat !!
Topic: AR12706 and Proms April 25
Replies: 4
Views: 36

Re: AR12706 and Proms April 25

Great images Dave!
by marktownley
Thu Apr 26, 2018 5:08 am
Forum: This is SolarChat !!
Topic: Today's SUN (20180425) with GOOD seeing
Replies: 5
Views: 74

Re: Today's SUN (20180425) with GOOD seeing

Lovely images Pedro, I like the closeups with the 152!
by marktownley
Wed Apr 25, 2018 7:53 pm
Forum: This is SolarChat !!
Topic: Daystar QUARK Chromosphere H-alpha Filter
Replies: 14
Views: 158

Re: Daystar QUARK Chromosphere H-alpha Filter

Quark in a diagonal works the same focus wise if it was an eyepiece in the diagonal
by marktownley
Wed Apr 25, 2018 7:52 pm
Forum: Solar Scope Modifications
Topic: Can i use my EDGEHD800 for Ha?
Replies: 5
Views: 47

Re: Can i use my EDGEHD800 for Ha?

Yes, you just need a suitable ERF. I use mine

Imageimage by Mark Townley, on Flickr

Airylab HaT...
by marktownley
Wed Apr 25, 2018 5:02 am
Forum: This is SolarChat !!
Topic: Lunt LS50 and barlow? Time of day to photo..
Replies: 7
Views: 99

Re: Lunt LS50 and barlow? Time of day to photo..

Hi Mattias. That's a lovely disk and a good solution to the newton rings. For me early in the morning works best.
by marktownley
Wed Apr 25, 2018 5:01 am
Forum: This is SolarChat !!
Topic: April 23rd Session
Replies: 11
Views: 169

Re: April 23rd Session

What an excellent set of images Brian, our weather has been up and down too similar to yours, although the forecast seems to be back to cloud again now for the foreseeable...
by marktownley
Wed Apr 25, 2018 4:41 am
Forum: This is SolarChat !!
Topic: Daystar QUARK Chromosphere H-alpha Filter
Replies: 14
Views: 158

Re: Daystar QUARK Chromosphere H-alpha Filter

Exactly what Brian says!

Congrats on the new purchases!
by marktownley
Tue Apr 24, 2018 4:04 pm
Forum: This is SolarChat !!
Topic: AR12706 High Res in H-a 280mm SCT + ARIES DERF
Replies: 11
Views: 186

Re: AR12706 High Res in H-a 280mm SCT + ARIES DERF

Hi Valery. Remind me what camera you are using here? What is the pixel size? You're using ROI to get down to the ~1300x900 frame size - how many fps with this?

Thanks, Mark
by marktownley
Tue Apr 24, 2018 2:08 pm
Forum: Solar Scope Modifications
Topic: Vixen VMC110L F9.4 Maksutov as Solar Scope?
Replies: 16
Views: 533

Re: Vixen VMC110L F9.4 Maksutov as Solar Scope?

I've tried both collimated and telecentric with Bobs, I personally found collimated was better. However unless his filters have improved significantly I think all you will get is a blury proms and hazy large scale surface detail at best.
by marktownley
Tue Apr 24, 2018 12:54 pm
Forum: This is SolarChat !!
Topic: AR2706 21 april
Replies: 23
Views: 260

Re: AR2706 21 april

Yes, very nice post processing it is too!
by marktownley
Tue Apr 24, 2018 12:51 pm
Forum: This is SolarChat !!
Topic: Images of AR12706
Replies: 9
Views: 120

Re: Images of AR12706

Thanks for the update!
by marktownley
Tue Apr 24, 2018 5:28 am
Forum: Solar Scope Modifications
Topic: Make a native F30 telescope better for Solar
Replies: 2
Views: 87

Re: Make a native F30 telescope better for Solar

Hi Andrew, Need the optical parameters of the scope before any working out can be done - objective diameter, focal ratio.
by marktownley
Tue Apr 24, 2018 5:22 am
Forum: Solar Scope Modifications
Topic: Vixen VMC110L F9.4 Maksutov as Solar Scope?
Replies: 16
Views: 533

Re: Vixen VMC110L F9.4 Maksutov as Solar Scope?

Try the scope with the PST and see how you get on, I think the ability to focus the Vixen to get an working image through the PST will be key, the front collimating lens on the PST needs to be 200mm inside focus of the Vixen. How a filter performs in a collimated or telecentric beam is to do with th...
by marktownley
Tue Apr 24, 2018 5:15 am
Forum: This is SolarChat !!
Topic: AR2706 21 april
Replies: 23
Views: 260

Re: AR2706 21 april

For me the seeing is by far the biggest factor in getting decent images...
by marktownley
Tue Apr 24, 2018 5:12 am
Forum: This is SolarChat !!
Topic: NEAF
Replies: 16
Views: 308

Re: NEAF

Looks like you all had a great time, and nice to see some faces too!
by marktownley
Tue Apr 24, 2018 5:08 am
Forum: This is SolarChat !!
Topic: The Sun - 21st April
Replies: 1
Views: 45

Re: The Sun - 21st April

Good results David! I was busy on Saturday so no observing for me then.
by marktownley
Mon Apr 23, 2018 11:32 am
Forum: This is SolarChat !!
Topic: Some Sun From The Last Couple of Days
Replies: 7
Views: 105

Some Sun From The Last Couple of Days

Hi All, Summer came briefly here in the UK (and went again!), however last week was late nights at work and not able to image as I would in the early evening. However friday was able to get off a bit earlier and squeeze in a bit of imaging before heading off on the boat for the weekend. Seeing was r...