Search found 2063 matches

by gabrieli
Mon May 25, 2020 7:23 pm
Forum: This is SolarChat !!
Topic: Monday Sun-day Fun Day... 25th May '20
Replies: 12
Views: 67

Re: Monday Sun-day Fun Day... 25th May '20

Hi, Stu

I wish I had patience like yours to catch an animation with that much quality. I would be happy with still images that had that much detail.

Lou
by gabrieli
Mon May 25, 2020 9:13 am
Forum: This is SolarChat !!
Topic: The AR continues on May 23
Replies: 7
Views: 108

Re: The AR continues on May 23

Thanks for the comments Reply for dhkaiser The image is more noisy than previous image. Usually, I apply one of the noise reduction filters in AstraImage but I didn't here since it tended to reduce the detail. Reply for Alfred The first couple of images show the "sweet spot" produce by the optical t...
by gabrieli
Sat May 23, 2020 9:00 pm
Forum: This is SolarChat !!
Topic: The AR continues on May 23
Replies: 7
Views: 108

The AR continues on May 23

Over night, last night, my furnace didn't need to run and that told me there was a hot day ahead. Two of the usb ports on my laptop stopped working (one was missing a plastic guide and the other next to it looked ok but wasn't powered up. So, I went back to an older laptop for data collection. On th...
by gabrieli
Fri May 22, 2020 9:59 pm
Forum: This is SolarChat !!
Topic: Active region on May 22
Replies: 11
Views: 126

Re: Active region on May 22

Hi, Peter Your question made me realize that there was an error in my figures. I was thinking of the 3X telecentric I had used the other day instead of the 2X Powermate I used for the current images. I corrected the efl values in this post. The 7 inch Mak has a "prime" focal length of 2700 mm at f/1...
by gabrieli
Fri May 22, 2020 9:30 pm
Forum: This is SolarChat !!
Topic: Active region on May 22
Replies: 11
Views: 126

Active region on May 22

There wasn't much improvement in seeing from last day, but the active region made up for it. I used my 7" inch Mak again, this time in double stack mode using a 35 nm Ha filter + 2X Powermate + LS50F + + Quark Combo + tilter + 0.5X reducer + Blackfly S (3.2Mp). This gave an efl of about 2700mm, prob...
by gabrieli
Thu May 21, 2020 8:12 pm
Forum: This is SolarChat !!
Topic: Proms from May 21
Replies: 5
Views: 66

Proms from May 21

Both this and the last session happened near the house just past noon, local time. Tomorrow, I'll set up further from the house earlier in the day and, hopefully, better seeing. For the image below, I used a full aperture ERF on a Celestron 7" Maksutov + a 3X telecentric with a 6nm Ha filter in its ...
by gabrieli
Thu May 21, 2020 3:10 pm
Forum: SPoD Archive
Topic: Full disk from May 20
Replies: 3
Views: 31

Full disk from May 20

I used an LS50F on an LS80 at 1120mm instead of my usual LS60F for the 4 pane mosaic below with a Grasshopper3 6Mp camera. The various ghosts and spurious unevenness apparently comes from the LS80 etalon because an identical effect is seen when I double stack the same LS80 with an LS60F. pan5sharp.j...
by gabrieli
Thu May 21, 2020 3:10 pm
Forum: This is SolarChat !!
Topic: Full disk from May 20
Replies: 3
Views: 40

Full disk from May 20

I used an LS50F on an LS80 at 1120mm instead of my usual LS60F for the 4 pane mosaic below with a Grasshopper3 6Mp camera. The various ghosts and spurious unevenness apparently comes from the LS80 etalon because an identical effect is seen when I double stack the same LS80 with an LS60F. pan5sharp.j...
by gabrieli
Thu May 21, 2020 10:31 am
Forum: This is SolarChat !!
Topic: Active region on May 20
Replies: 5
Views: 75

Re: Active region on May 20

Thanks, Alexandra, Jack, and Jochen. This Quark has never been bumped, dropped or otherwise suffered any severe impacts and seemed to do a decent job of double stacking but my "sense" was that the views were softer than before. The red glass (ERF?) was easy enough to clean. The material that smeared...
by gabrieli
Thu May 21, 2020 1:35 am
Forum: This is SolarChat !!
Topic: Active region on May 20
Replies: 5
Views: 75

Active region on May 20

This day was the first real "spring like" day in this area with lots of warmth and bad seeing and clear blue skies, another good day for testing. The image on the live view was so jittery that focussing was difficult with a lot of time spent on cranking in and out of focus. The scope used was a Cele...
by gabrieli
Sun May 17, 2020 1:19 pm
Forum: This is SolarChat !!
Topic: Some proms from May 16
Replies: 7
Views: 103

Some proms from May 16

These were taken with an LS80 double stacked with an LS60F at 1120 mm on a 1/2 inch Blackfly S at 2.3 Mp ROI.

Lou

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by gabrieli
Thu May 14, 2020 7:54 pm
Forum: This is SolarChat !!
Topic: One of the proms from May 13
Replies: 9
Views: 137

Re: One of the proms from May 13

Thanks for your informed comment, Jozef. That's very impressive contrast in your image. I arranged my module as "scope - 2X Powermate - LS50F - Quark Combo - tilter - camera" mainly for stability reasons. The Quark Combo has a blocking filter. I can't argue with the results you have, however. I will...
by gabrieli
Wed May 13, 2020 10:26 pm
Forum: This is SolarChat !!
Topic: One of the proms from May 13
Replies: 9
Views: 137

One of the proms from May 13

It was a deceptive, cloudless day when it looked like the seeing would be great except it wasn't. Nevertheless, there was an opportunity to try a new combination. I used a Celestron 7 inch Mak at f/30 with a "double stacked" module comprised of a Lunt 50 filter carrying a Quark Combo on a Televue 2X...
by gabrieli
Mon May 11, 2020 9:55 pm
Forum: This is SolarChat !!
Topic: May 5th in Ha Light
Replies: 14
Views: 191

Re: May 5th in Ha Light

Hi, Brian

It's been a long time since I've seen such fine detail in a prom image as in your last image. Very nice work.

Lou
by gabrieli
Fri May 08, 2020 12:51 am
Forum: This is SolarChat !!
Topic: Back from hibernation
Replies: 7
Views: 177

Back from hibernation

I've been lurking and admiring the work of so many people here for the past while and thought I should get back into imaging myself. This image was from May 5, taken just after noon, local time. The seeing was not that great, in keeping with tradition, but the setup was a first effort using a PST et...
by gabrieli
Tue Oct 29, 2019 10:29 am
Forum: This is SolarChat !!
Topic: Offerings from Oct 28
Replies: 9
Views: 873

Re: Offerings from Oct 28

For James and anyone else wondering, the equipment used was an LS152 double stacked with a Quark Chromosphere and processed with a lot of levels work.

Lou
by gabrieli
Mon Oct 28, 2019 11:00 pm
Forum: This is SolarChat !!
Topic: Offerings from Oct 28
Replies: 9
Views: 873

Offerings from Oct 28

It was a pretty good day today with a clear blue sky and dead on tracking which didn't require any correction for the duration of each recording session. The seeing was better than usual. There was a nice variety of scattered proms. I did a little bit of cheating in the last two images which I'm sur...
by gabrieli
Wed Oct 16, 2019 10:39 am
Forum: This is SolarChat !!
Topic: From June 29 and 30
Replies: 11
Views: 1144

Re: From June 29 and 30

Hi, Magnus Sorry about the delay in answering you. Here's my suggestion for finding focus. Find focus without the focal reducer first. Then after you add the focal reducer, you need to focus inwards to find the new focus since focal reducers converge the light cone more than before. Also try to shor...
by gabrieli
Wed Oct 16, 2019 10:26 am
Forum: This is SolarChat !!
Topic: Some events from Oct 15
Replies: 11
Views: 811

Some events from Oct 15

The seeing was nothing special but some unique features lured me outside to eke out the following images.

Lou
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by gabrieli
Sun Oct 13, 2019 11:06 am
Forum: This is SolarChat !!
Topic: Large prom on Oct 11
Replies: 12
Views: 826

Re: Large prom on Oct 11

Thanks, Maurits and other viewers

My first reaction on seeing the SPOD image was "Hey, I took an image of that same prom that was almost as good as the SPOD".

Lou
by gabrieli
Fri Oct 11, 2019 9:09 pm
Forum: This is SolarChat !!
Topic: Large prom on Oct 11
Replies: 12
Views: 826

Large prom on Oct 11

The prom from last day put on a nice display today. Conditions were windy with intermittent good seeing. It's sad that some of the best seeing this year is happening in the last few weeks of the season, barring unexpected events that might happen in colder weather. A LS152 was used with a Quark Chro...
by gabrieli
Fri Oct 11, 2019 1:11 am
Forum: SPoD Archive
Topic: Proms and filament from Oct 10
Replies: 10
Views: 2078

Proms and filament from Oct 10

I hope the filament is around tomorrow as filaprom. I stayed with one setup for the day's session: an LS152 + Quark Chromosphere recording on a
Blackfly S (3.2MP).

Lou
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by gabrieli
Fri Oct 11, 2019 1:11 am
Forum: This is SolarChat !!
Topic: Proms and filament from Oct 10
Replies: 11
Views: 811

Proms and filament from Oct 10

I hope the filament is around tomorrow as filaprom. I stayed with one setup for the day's session: an LS152 + Quark Chromosphere recording on a
Blackfly S (3.2MP).

Lou
filament.jpg
filament.jpg (575.68 KiB) Viewed 811 times
filamentc.jpg
filamentc.jpg (672.3 KiB) Viewed 811 times
filamentinv.jpg
filamentinv.jpg (589.78 KiB) Viewed 811 times
230argb.jpg
230argb.jpg (1.03 MiB) Viewed 811 times
230a.jpg
230a.jpg (456.21 KiB) Viewed 811 times
230ac.jpg
230ac.jpg (806.86 KiB) Viewed 811 times
342a.jpg
342a.jpg (387.81 KiB) Viewed 811 times
543xx.jpg
543xx.jpg (586.83 KiB) Viewed 811 times
by gabrieli
Wed Oct 02, 2019 5:36 pm
Forum: This is SolarChat !!
Topic: Active region and proms from Oct 1
Replies: 7
Views: 693

Active region and proms from Oct 1

I sure miss the more active sun from previous years. I don't recall having to boost proms so much just to make them visible. Anyway, here are some results from the previou day taken with my LS152 + Quark Chromosphere in hazy skies.

Lou
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by gabrieli
Sat Sep 28, 2019 9:53 am
Forum: This is SolarChat !!
Topic: A small flare on a quiet sun. 280mm scope
Replies: 14
Views: 1005

Re: A small flare on a quiet sun. 280mm scope

I always look forward to your work, Valery. This is a very fine image. A question: Is the small size of the blocking filter an important part of your technique. If I reduce the size of my blocking filter with similar optics and camera sensor, would the image improve (assuming seeing is good). Thanks...