Search found 466 matches

by krakatoa1883
Wed May 22, 2019 10:33 am
Forum: This is SolarChat !!
Topic: Blank! Nothing to See Here... 21st may
Replies: 9
Views: 199

Re: Blank! Nothing to See Here... 21st may

Superb CaK images, Mark, at full res they are really impressive
by krakatoa1883
Wed May 22, 2019 8:48 am
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 50
Views: 1659

Re: 150 mm Solar Newton

Hi Brian no, based on my experience there is no enough light for imaging in H alpha with a deluminized mirror. However the field is not completely dark, at least with my Quark, may be something can be done at low resolution but in my opinion is not worth the effort. I have no experience with Lunt Ca...
by krakatoa1883
Sun May 19, 2019 9:23 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Thinking about a mount upgrade - questions
Replies: 6
Views: 253

Re: Thinking about a mount upgrade - questions

Hi Franco, choose a white mount, not a black one that under the Sun makes the tube hot. That said there are lot of mounts you can consider as an upgrade. I am currently using a Vixen SXD2 but I understand is beyond your price range. Had experience with older HEQ5 and EQ6, all fine for solar observin...
by krakatoa1883
Sun May 19, 2019 9:00 am
Forum: Solar Scope Modifications
Topic: Removing new Mods
Replies: 23
Views: 571

Re: Maksutov 180/1800 Modification?

Astrophil wrote:
Sat May 18, 2019 5:56 pm
There are yellow glass, red glass, Baader D-ERF, and Aries D-ERF that I'm aware of.
I am aware too there are all these ERFs, which ones were the subject of your test ?
by krakatoa1883
Sat May 18, 2019 3:30 pm
Forum: Solar Scope Modifications
Topic: Removing new Mods
Replies: 23
Views: 571

Re: Maksutov 180/1800 Modification?

As with the feeling of others I would not recommend this modification in this way at all. A full aperture ERF is the best solution at these apertures. I totally agree, Mark, however Astrophil's experiment raises an interesting point as it seems that front ERFs can be quite different each other. How...
by krakatoa1883
Sat May 18, 2019 11:14 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt Blocking Filter Owners. Your Assistance Please
Replies: 3
Views: 199

Re: Lunt Blocking Filter Owners. Your Assistance Please

Now I'm curious... :lol:

this is the actual color of the glass
BG.jpg
BG.jpg (29.89 KiB) Viewed 163 times
by krakatoa1883
Sat May 18, 2019 9:38 am
Forum: Solar Scope Modifications
Topic: Removing new Mods
Replies: 23
Views: 571

Re: Maksutov 180/1800 Modification?

Astrophil wrote:
Fri May 17, 2019 7:00 pm
I tested different full aperture energy rejection filters to see how they performed.
what a large difference in T between the hottest and the coldest ERF...

A very interesting experiment indeed, is the hottest ERF you tested still safe at the etalon or would it require additional filtering ?
by krakatoa1883
Sat May 18, 2019 8:30 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt Blocking Filter Owners. Your Assistance Please
Replies: 3
Views: 199

Re: Lunt Blocking Filter Owners. Your Assistance Please

Green reflection (B600 #0000507). B1200 the same (purchased few months ago).
by krakatoa1883
Sat May 18, 2019 7:57 am
Forum: This is SolarChat !!
Topic: Sol from the 16th of May 2019.
Replies: 6
Views: 157

Re: Sol from the 16th of May 2019.

Beautiful discs, Eric, in spite of the conditions
by krakatoa1883
Sat May 18, 2019 7:55 am
Forum: This is SolarChat !!
Topic: Saturday Sunshine - 4th May
Replies: 11
Views: 258

Re: Saturday Sunshine - 4th May

Really magnificent CaK images, Mark, fantastic
by krakatoa1883
Sat May 11, 2019 8:34 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20190511) | QUARK first light
Replies: 13
Views: 342

Re: Today's SUN (20190511) | QUARK first light

It seems to be a very good unit, Pedro.
by krakatoa1883
Fri May 10, 2019 4:16 pm
Forum: This is SolarChat !!
Topic: AR2740 on May 4th
Replies: 19
Views: 344

Re: AR2740 on May 4th

Great images, Franco, very sharp!
by krakatoa1883
Wed May 08, 2019 2:52 pm
Forum: This is SolarChat !!
Topic: May 7: H alpha and CaK
Replies: 11
Views: 239

Re: May 7: H alpha and CaK

Fantastic images, Peter, CaK is superlative.
by krakatoa1883
Wed May 08, 2019 9:53 am
Forum: This is SolarChat !!
Topic: Quick session this morning May 7th
Replies: 23
Views: 411

Re: Quick session this morning May 7th

Superb images, Franco, morning hours are always the best for imaging.
by krakatoa1883
Tue May 07, 2019 7:29 pm
Forum: This is SolarChat !!
Topic: AR12736 - 12738 - 12740
Replies: 6
Views: 118

Re: AR12736 - 12738 - 12740

Thanks to all of you, much appreciated :)
by krakatoa1883
Tue May 07, 2019 7:29 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Why my Quark always refused to work...
Replies: 11
Views: 597

Re: Why my Quark always refused to work...

At first my Quark wasn't bad, something happened to the BF later... still to understand what... :?
by krakatoa1883
Tue May 07, 2019 1:52 pm
Forum: This is SolarChat !!
Topic: Two solar active regions in CaK.
Replies: 7
Views: 180

Re: Two solar active regions in CaK.

Great images Brian!
by krakatoa1883
Tue May 07, 2019 1:30 pm
Forum: This is SolarChat !!
Topic: AR12736 - 12738 - 12740
Replies: 6
Views: 118

AR12736 - 12738 - 12740

I followed this spot through March and April taking some images while approaching the limb as AR12736 and then during the second and now the third apparition. It is surprising how well the spot survived for all this time, yesterday and today was even surrounded by several pores and tiny spots that w...
by krakatoa1883
Tue May 07, 2019 12:26 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20190504) | lots of limb activity + animated GIF
Replies: 17
Views: 298

Re: Today's SUN (20190504) | lots of limb activity + animated GIF

Great images and video, Pedro. I am considering to get a Lunt 152 too, seem a very good scope.
by krakatoa1883
Tue May 07, 2019 12:25 pm
Forum: This is SolarChat !!
Topic: My recent disc pics - Monday 6th May 2019
Replies: 6
Views: 140

Re: My recent disc pics - Monday 6th May 2019

Great discs, very sharp and well processed!
by krakatoa1883
Mon May 06, 2019 7:48 pm
Forum: This is SolarChat !!
Topic: May the 6th Solar Activity
Replies: 8
Views: 153

Re: May the 6th Solar Activity

Great CaK images, David, nice limb details!
by krakatoa1883
Mon May 06, 2019 7:46 pm
Forum: This is SolarChat !!
Topic: storm on the sun May 6 PART 2 (NEW)
Replies: 15
Views: 314

Re: storm on the sun May 6 (new)

Spectacular animation, well done!
by krakatoa1883
Sun May 05, 2019 1:16 pm
Forum: This is SolarChat !!
Topic: AR2740 in CaK, 05052019
Replies: 11
Views: 234

Re: AR2740 in CaK, 05052019

Very sharp image, Bart, spicules, prominence and penumbra filaments came out well. It seems really promising. Just to complete the picture try to see what happens to the other colors, green and red, if they now show spherical aberration and how much.
by krakatoa1883
Sat May 04, 2019 7:16 pm
Forum: This is SolarChat !!
Topic: Saturday Sun (4th May 2019)
Replies: 10
Views: 177

Re: Saturday Sun (4th May 2019)

Great images Alexandra, very sharp in spite of the seeing.