Search found 1987 matches

by gabrieli
Mon Nov 05, 2018 10:58 am
Forum: This is SolarChat !!
Topic: In a reflected sunlight.
Replies: 9
Views: 237

Re: In a reflected sunlight.

Hi, Valery

Beautiful image.
This region (lunar north) is my favorite area to photograph because of the variety of features. The first thing I looked for was the line down the center of the "canal" to the left and up from Plato (in shadow). I've never been able to resolve this.

Lou
by gabrieli
Mon Nov 05, 2018 2:27 am
Forum: This is SolarChat !!
Topic: Main prom group from nov 4
Replies: 5
Views: 116

Main prom group from nov 4

For this session, I used an ES102 at about 3000mm efl with a 135mm Baader erf in front and a Quark chromosphere in back on a Blackfly 5.1 Mp camera at an ROI of about 3.2 Mp. It was immediately obvious that the seeing was poor given the rapidly moving "waves" distorting the edge of the solar disk. L...
by gabrieli
Fri Nov 02, 2018 10:51 am
Forum: This is SolarChat !!
Topic: October 30th in Ha
Replies: 8
Views: 172

Re: October 30th in Ha

Hi, Brian

That's a nice line up of features from Oct 30. I hope that the weather clears by Sunday as you say and that there are large features to view.
I'd like one more go before the season levels off.

Lou
by gabrieli
Thu Nov 01, 2018 12:09 pm
Forum: This is SolarChat !!
Topic: Sol from the 31st of October 2018.
Replies: 10
Views: 205

Re: Sol from the 31st of October 2018.

Hi, Eric I've always been impressed (maybe even jealous) of the very pleasing gradient your full disks show from the center to the limb. Are they like this before processing? I usually have to blend out the unevenness in my mosaic full disks. Maybe it's time for to think about a Solarmax 90 DS for m...
by gabrieli
Wed Oct 31, 2018 11:59 am
Forum: This is SolarChat !!
Topic: Wannabe filaments from Oct 30
Replies: 3
Views: 152

Wannabe filaments from Oct 30

These next 2 images were pulled from some nearly rejected files taken on Oct 30. I find myself missing those thick wormy filaments from what seems the distant past. Lou temp1+.jpg temp1.jpg When I processed this next image (from my previous post), it immediately reminded me of a swan running towards...
by gabrieli
Tue Oct 30, 2018 10:56 pm
Forum: This is SolarChat !!
Topic: Some unusual proms on Oct 30
Replies: 4
Views: 132

Some unusual proms on Oct 30

With the sun noticeably lower than the last post, the seeing was poor as expected but quite a few proms appeared, some
with unusual shapes. Here are a few that were taken with Lunt152 and Quark Chromosphere.

Lou
181.jpg
181.jpg (179.94 KiB) Viewed 132 times
266.jpg
266.jpg (580.55 KiB) Viewed 132 times
200.jpg
200.jpg (594.09 KiB) Viewed 132 times
by gabrieli
Tue Oct 23, 2018 9:42 pm
Forum: This is SolarChat !!
Topic: Proms from Oct 21
Replies: 4
Views: 146

Proms from Oct 21

There was quite a variety of activity along the sun's edge on this day. Here are a few samples (reoriented upright). I used a Lunt 152 for these images. Most of the imaging was done between clouds which didn't help teh seeing conditions. 391a.jpg 348a.jpg 294a.jpg 289a.jpg 454.jpg 454a.jpg 282a.jpg
by gabrieli
Wed Oct 17, 2018 9:37 am
Forum: This is SolarChat !!
Topic: Prom and AR from Oct16
Replies: 7
Views: 187

Prom and AR from Oct16

I debated whether to haul out my c9.25 to try some higher res imaging on the large prom but a very stiff wind convinced me not to be too ambitious and setup my Lunt 152 instead. Even that steup had a hard time with the gusts. At one point, I saw the prom disappearing gradually when the power cord ca...
by gabrieli
Thu Oct 11, 2018 11:31 am
Forum: This is SolarChat !!
Topic: A very special prom on Oct 10
Replies: 27
Views: 721

Re: A very special prom on Oct 10

The feedback on these Ha filters is a good example of why it's so great having people with technical or real world experience on this board that freely offer information. I currently use a 2" Baader UV/IR blocking filter on the nosepiece of telecentric for heat protection for the telecentric and the...
by gabrieli
Thu Oct 11, 2018 2:33 am
Forum: This is SolarChat !!
Topic: A very special prom on Oct 10
Replies: 27
Views: 721

Re: A very special prom on Oct 10

Hi, Skyburner Thanks for your suggestion about using an Ha filter in the optical train. I see that both Baader and Astronomik have a 7nm Ha filter that's ok pricewise. I'm not entirely clear on why the filter should be ahead of all the optics at the back end of the scope. That puts it in a very high...
by gabrieli
Wed Oct 10, 2018 11:37 pm
Forum: This is SolarChat !!
Topic: A very special prom on Oct 10
Replies: 27
Views: 721

A very special prom on Oct 10

I didn't have any great expectations for this day since clouds were passing over the sun intermitently. The first setup was my LS 152 + Quark Chromosphere + Blackfly S 3.2Mp (1/1.8 inch sensor). Then I setup my c9.25 with an Aries ERF in front and a 0.63X reducer + 3x telecentric + Quark Combo + Bla...
by gabrieli
Wed Oct 10, 2018 5:58 pm
Forum: This is SolarChat !!
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 300

Re: Decent sized proms on Oct 9

Thanks, everyone, for the views/comments.
I’ve said before that coupling a Quark Chromosphere to a
Lunt 152 is like getting a new scope. If you try it, you will need
a 3.5 to 4.5 inch extension tube to accomodate the new focus
point.

Lou
by gabrieli
Wed Oct 10, 2018 5:58 pm
Forum: SPoD Archive
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 246

Re: Decent sized proms on Oct 9

Thanks, everyone, for the views/comments.
I’ve said before that coupling a Quark Chromosphere to a
Lunt 152 is like getting a new scope. If you try it, you will need
a 3.5 to 4.5 inch extension tube to accomodate the new focus
point.

Lou
by gabrieli
Wed Oct 10, 2018 12:00 am
Forum: This is SolarChat !!
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 300

Re: Decent sized proms on Oct 9

Thanks. Marty

I use the Quark to double stack the Lunt 152. If a "double limb" appears, it's the result of separating a single image into disk and prom layers and processing them separately.

Lou
by gabrieli
Wed Oct 10, 2018 12:00 am
Forum: SPoD Archive
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 246

Re: Decent sized proms on Oct 9

Thanks. Marty

I use the Quark to double stack the Lunt 152. If a "double limb" appears, it's the result of separating a single image into disk and prom layers and processing them separately.

Lou
by gabrieli
Tue Oct 09, 2018 9:28 pm
Forum: This is SolarChat !!
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 300

Decent sized proms on Oct 9

All images were taken with a Lunt 152 + Quark Chromosphere and Blackfly S 5.1 Mp camera. The larger scale images used a 1.5X barlow. I had a half hour of moderately good seeing before the clouds rolled in. Lou 757.jpg 752.jpg 607.jpg 603.jpg 555.jpg 517.jpg 460.jpg 460-.jpg 411b.jpg
by gabrieli
Tue Oct 09, 2018 9:28 pm
Forum: SPoD Archive
Topic: Decent sized proms on Oct 9
Replies: 11
Views: 246

Decent sized proms on Oct 9

All images were taken with a Lunt 152 + Quark Chromosphere and Blackfly S 5.1 Mp camera. The larger scale images used a 1.5X barlow. I had a half hour of moderately good seeing before the clouds rolled in. Lou 757.jpg 752.jpg 607.jpg 603.jpg 555.jpg 517.jpg 460.jpg 460-.jpg 411b.jpg
by gabrieli
Mon Oct 08, 2018 2:00 am
Forum: This is SolarChat !!
Topic: Gorgeous Prom Groups Today, HA 120mm, Oct 7th 2018
Replies: 10
Views: 282

Re: Gorgeous Prom Groups Today, HA 120mm, Oct 7th 2018

Very impressive proms putting on a show and beautifully captured, especially appreciated being under cloudy skies here for the past many days.
Tuesday coming up looks promising and I hope there are some worthwhile features appearing.

Lou
by gabrieli
Mon Oct 08, 2018 2:00 am
Forum: SPoD Archive
Topic: Gorgeous Prom Groups Today, HA 120mm, Oct 7th 2018
Replies: 10
Views: 228

Re: Gorgeous Prom Groups Today, HA 120mm, Oct 7th 2018

Very impressive proms putting on a show and beautifully captured, especially appreciated being under cloudy skies here for the past many days.
Tuesday coming up looks promising and I hope there are some worthwhile features appearing.

Lou
by gabrieli
Sat Oct 06, 2018 1:25 am
Forum: This is SolarChat !!
Topic: First light with Blackfly S 3.2Mp
Replies: 4
Views: 179

First light with Blackfly S 3.2Mp

This camera (Blackfly S, 3.2Mp) was used with a double stack setup I've used only once before, LS80 + 3X telecentric + Quark Combo in back. This allows use of LS80 in a double stack configuration and at full 80mm aperture. I usually double stack the LS80 with an LS60F in front. Because the Quark Com...
by gabrieli
Wed Oct 03, 2018 6:27 pm
Forum: This is SolarChat !!
Topic: Sol from the 29th of Septamber 2018.
Replies: 10
Views: 252

Re: Sol from the 29th of Septamber 2018.

Hi, Eric

Your prom shots with the 6" f/12 are breathtaking.
by gabrieli
Wed Oct 03, 2018 12:30 am
Forum: This is SolarChat !!
Topic: H-alpha 30092018, first light asi290mm
Replies: 23
Views: 549

Re: H-alpha 30092018, first light asi290mm

Hi, Bart

From the FLIR spec sheet on their website the QE for the Blackfly S (5.1 MP) is 76 at 525nm. The QE of your 290 is stated as 80 on the ZWO site but the
wavelength is not specified.

Lou
by gabrieli
Tue Oct 02, 2018 11:34 am
Forum: This is SolarChat !!
Topic: H-alpha 30092018, first light asi290mm
Replies: 23
Views: 549

Re: H-alpha 30092018, first light asi290mm

Hi, Bart The August 15 images were taken at 25 ms (25000µs on the settings for my Blackfly S) with both gamma and gain turned up. I used a Lunt152 + a Quark Chromosphere working at f/25. The scene had bright highlights. The 3 - 5 ms shutter speeds I was referring to were for single PST high transmis...
by gabrieli
Mon Oct 01, 2018 12:07 pm
Forum: This is SolarChat !!
Topic: H-alpha 30092018, first light asi290mm
Replies: 23
Views: 549

Re: H-alpha 30092018, first light asi290mm

Thanks, SkyBurner I was very aware of potential eye damage in removing the blue glass. I only do imaging since in my area good skies are very rare. I read somewhere that using 3.8 density solar film instead of 5.0 density solar film results in a 4 f stop increase in light passed and that is recommen...
by gabrieli
Sun Sep 30, 2018 7:50 pm
Forum: This is SolarChat !!
Topic: H-alpha 30092018, first light asi290mm
Replies: 23
Views: 549

Re: H-alpha 30092018, first light asi290mm

Hi, Bart Congratulations on your new instrument and great first results. I had some questions about your BF mod and the camera itself. Is the blue glass on the telescope side of the BF1200? I can tell that the glass on the camera side of the BF1200 the glass is red on my BF1200 but I can't see the g...