Search found 23635 matches

by marktownley
Sun May 20, 2018 11:30 am
Forum: This is SolarChat !!
Topic: Thermal Acclimation of My Lunt50
Replies: 25
Views: 511

Re: Thermal Acclimation of My Lunt50

I thought I would give a bit of an update with this. I have tried a few things, but still come to no real conclusion. The one thing that repeats itself is that the scope has an off-centred annulus sweetspot that is present when observing 'cool' - which is morning, when the scope is nice and warm in ...
by marktownley
Sun May 20, 2018 5:40 am
Forum: This is SolarChat !!
Topic: Takahashi EM400 in | EM200 out
Replies: 8
Views: 81

Re: Takahashi EM400 in | EM200 out

A very nice mount Pedro!
by marktownley
Fri May 18, 2018 1:42 pm
Forum: This is SolarChat !!
Topic: Reflective
Replies: 4
Views: 31

Re: Reflective

Them's beauties!
by marktownley
Fri May 18, 2018 1:10 pm
Forum: This is SolarChat !!
Topic: SM40 on Petzval62mm FD 18/5/18
Replies: 5
Views: 52

Re: SM40 on Petzval62mm FD 18/5/18

That's a really nice disk!
by marktownley
Fri May 18, 2018 6:49 am
Forum: This is SolarChat !!
Topic: Sol from the 17th of May 2018.
Replies: 2
Views: 49

Re: Sol from the 17th of May 2018.

Good disks Eric, hoping I get some time (and weather!) over the weekend to image.
by marktownley
Fri May 18, 2018 6:48 am
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 474

Re: It is all in the detail.

Even on a 'blank' disk there is still plenty of detail for a Lunt50, here's a shot I took a few days ago. https://farm1.staticflickr.com/969/40314203150_b538ff68d6_o.jpg ss-fd-bw by Mark Townley , on Flickr I get very similar sweetspotting that you get when my Lunt50 isn't acclimated. It seems to li...
by marktownley
Fri May 18, 2018 6:45 am
Forum: This is SolarChat !!
Topic: Supermoon crescent and Venus
Replies: 5
Views: 49

Re: Supermoon crescent and Venus

Lovely capture Stu. Me and Fi were stood out front admiring it yesterday evening too.
by marktownley
Thu May 17, 2018 11:06 pm
Forum: Solar Astronomy Shop and Swap
Topic: Lunt50 1.25" Feather Touch Focuser
Replies: 1
Views: 313

Re: Lunt50 1.25" Feather Touch Focuser

Reduced price!

FeatherTouch Lunt 1.25" focuser - £180
Baader 36mm Red CCD Filter - £40
PST Lens Cap - £5
by marktownley
Thu May 17, 2018 5:27 am
Forum: This is SolarChat !!
Topic: Sol from the 16th of May 2018.
Replies: 5
Views: 50

Re: Sol from the 16th of May 2018.

Lovely disks Eric!
by marktownley
Thu May 17, 2018 5:27 am
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 474

Re: It is all in the detail.

There's a couple of things going on here - there is newtons rings, get the camera tilted to solve that. Then concentrate on the tuning, it doesn't look at all on band - the darker light area is the sweet spot.
by marktownley
Thu May 17, 2018 5:21 am
Forum: This is SolarChat !!
Topic: SUN 13/5/2018
Replies: 4
Views: 73

Re: SUN 13/5/2018

Nice captures Peter
by marktownley
Thu May 17, 2018 5:21 am
Forum: This is SolarChat !!
Topic: HELP QUARK
Replies: 32
Views: 536

Re: HELP QUARK

Looks way off band to me Rainer
by marktownley
Thu May 17, 2018 5:10 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Newton Rings and CCD Fringing
Replies: 4
Views: 145

Re: Newton Rings and CCD Fringing

Hi Ken. My PGR Blackfly IMX249 camera shows newtons rings in Ha light regardless of focal ratio, however none at all in CaK. The PGR Chameleon 3 shows rings in Ha regardless of focal length, however in CaK the issue is dependent on the barlow lens used - some combinations it exists, some it does not...
by marktownley
Wed May 16, 2018 5:10 am
Forum: This is SolarChat !!
Topic: Sol 15-5-2018 Ha
Replies: 8
Views: 121

Re: Sol 15-5-2018 Ha

Lovely images Steve!
by marktownley
Wed May 16, 2018 5:09 am
Forum: This is SolarChat !!
Topic: Reflected
Replies: 11
Views: 158

Re: Reflected

These are a pair of brilliant collages Derek, I would love to have your skies!
by marktownley
Wed May 16, 2018 5:07 am
Forum: This is SolarChat !!
Topic: Sol from the 14th and 15th of May 2018.
Replies: 8
Views: 104

Re: Sol from the 14th and 15th of May 2018.

Good disks Eric!
by marktownley
Tue May 15, 2018 8:03 pm
Forum: This is SolarChat !!
Topic: Hydrogen Sun 14th May 2018
Replies: 17
Views: 237

Re: Hydrogen Sun 14th May 2018

Montana wrote:
Tue May 15, 2018 11:34 am
Sadly I always have to cook the tea when I get home so no chance to observe :(

Alexandra
Solar, then tea, always.
by marktownley
Tue May 15, 2018 5:12 am
Forum: This is SolarChat !!
Topic: Sunday 13 May full disk and active region
Replies: 6
Views: 97

Re: Sunday 13 May full disk and active region

Nice images there Bruce
by marktownley
Tue May 15, 2018 5:12 am
Forum: This is SolarChat !!
Topic: Moat flow
Replies: 4
Views: 116

Re: Moat flow

Great animation and interesting stuff!
by marktownley
Tue May 15, 2018 5:11 am
Forum: This is SolarChat !!
Topic: May 13 2018 AR12709 in Ca-K with 280mm aperture
Replies: 8
Views: 140

Re: May 13 2018 AR12709 in Ca-K with 280mm aperture

That's an excellent closeup Valery!
by marktownley
Tue May 15, 2018 5:10 am
Forum: This is SolarChat !!
Topic: Hydrogen Sun 14th May 2018
Replies: 17
Views: 237

Re: Hydrogen Sun 14th May 2018

That's an excellent result Stu! I squeezed a bit of solar in after work too yesterday.
by marktownley
Tue May 15, 2018 5:08 am
Forum: This is SolarChat !!
Topic: Sol 13-5-2018 Ha
Replies: 4
Views: 81

Re: Sol 13-5-2018 Ha

Nice disk Steve
by marktownley
Tue May 15, 2018 5:05 am
Forum: This is SolarChat !!
Topic: AR12708 in H-a and at 655nm 280mm
Replies: 6
Views: 105

Re: AR12708 in H-a and at 655nm 280mm

Excellent closeups Valery! They came out well.
by marktownley
Tue May 15, 2018 5:03 am
Forum: This is SolarChat !!
Topic: Sol from the 13th of May 2018.
Replies: 5
Views: 97

Re: Sol from the 13th of May 2018.

Great disks through the haze!