Search found 2084 matches

by gabrieli
Fri Jul 26, 2019 11:01 pm
Forum: This is SolarChat !!
Topic: On the sun's limb on July 25
Replies: 8
Views: 736

Re: On the sun's limb on July 25

Hi, Andrew If I remember correctly, what you are describing sounds like the prominence in the 3rd image down which I spotted in the lower right of the sun's disk on my screen. I often reorient my images right side up no matter where they actually are on the sun. Did you take any images of that promi...
by gabrieli
Fri Jul 26, 2019 12:28 pm
Forum: This is SolarChat !!
Topic: On the sun's limb on July 25
Replies: 8
Views: 736

On the sun's limb on July 25

Here are a few more images taken with my c9.25 with a Quark Combo on a 3X telecentric with an Orion 0.8X focal reducer.

Lou
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by gabrieli
Thu Jul 25, 2019 11:04 pm
Forum: This is SolarChat !!
Topic: Proms and spicules from July 23
Replies: 7
Views: 647

Re: Proms and spicules from July 23

Hi, Brian

I hear the temperatures are scorchiing south of you, causing some real problems.

Maybe when you get back, you can post some landscapes.

Lou
by gabrieli
Thu Jul 25, 2019 1:22 am
Forum: This is SolarChat !!
Topic: Cat, dog or Horse?
Replies: 11
Views: 891

Re: Cat, dog or Horse?

Hi, Pepe

My cats insist it's a cat.

Lou
by gabrieli
Wed Jul 24, 2019 12:27 am
Forum: This is SolarChat !!
Topic: Proms and spicules from July 23
Replies: 7
Views: 647

Proms and spicules from July 23

This was a great day to continue trials with my c9.25. It was also a "first light" for an Orion 0.8X 2" focal reducer. The reducer - sensor distance to achieve 0.8X is stated as 55 mm. I used more than that due to the required "tilter" to eliminate Newton's rings. Also, 0.8X would not be too useful ...
by gabrieli
Tue Jul 23, 2019 1:37 am
Forum: This is SolarChat !!
Topic: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Replies: 12
Views: 965

Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July

Hi, Mark Your SM90 really puts out some sharp detail at higher res. I've just recently discovered where the binning option is in the FLIR Spinnaker software that runs all my Blackfly S cameras. With a high pixel count camera the gain in brightness is very noticeable while the reduced pixel count is ...
by gabrieli
Mon Jul 22, 2019 2:39 pm
Forum: This is SolarChat !!
Topic: Big Prom on July 21
Replies: 9
Views: 676

Re: Big Prom on July 21

Thanks for the comments and views.

I can't wait for more of these great proms.

Lou
by gabrieli
Sun Jul 21, 2019 8:43 pm
Forum: This is SolarChat !!
Topic: Big Prom on July 21
Replies: 9
Views: 676

Big Prom on July 21

This prom is the a development of the prom that was in the same position on the sun as last day except that it has "bloomed" outwards. Its appearance was very feint on GONG and appeared even more so in the the live view because of the haze. So, there was some levels work involved to make it more con...
by gabrieli
Sun Jul 21, 2019 10:04 am
Forum: This is SolarChat !!
Topic: Proms from July 20
Replies: 4
Views: 441

Proms from July 20

Here are a couple of images of my favourite solar subject: proms. This day was the hottest day this season and very uncomfortable but since I saw a couple of "blips" on the sun's edge on GONG I decide to put my smaller scope to use for a quick session. I used an LS80 with a 3X telecentric and Quark ...
by gabrieli
Tue Jul 16, 2019 1:07 pm
Forum: This is SolarChat !!
Topic: Filaments on July 16
Replies: 5
Views: 626

Filaments on July 16

These next images were taken during a break from "chores" around the house and yard. The conditions were difficult as usual but some interesting features are appearing.

Lou

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by gabrieli
Sat Jul 13, 2019 8:53 pm
Forum: This is SolarChat !!
Topic: Another day another first light (July 13)
Replies: 8
Views: 705

Another day another first light (July 13)

Near the end of last season, a 6nm (2") Ha filter arrived and there was no chance of trying it. A few days ago a new 4X telecentric arrived and, today (July 13), in a sky that ranged from hazy to completely overcast, I managed 6 images. As soon as the sky is more suitable, I'll try the new filter an...
by gabrieli
Wed Jul 10, 2019 11:14 pm
Forum: This is SolarChat !!
Topic: Prom image from July 10
Replies: 5
Views: 600

Prom image from July 10

When I saw a reasonably large prom on the GONG website, I decide to put off some house painting until later in the afternoon. Despite expected poor seeing, I felt this would be a good time to test a 0.63X reducer on a c9.25 with a Baader 3X telecentric. Here's the best result of several images of th...
by gabrieli
Tue Jul 02, 2019 11:15 am
Forum: This is SolarChat !!
Topic: Mostly spicules from July 1
Replies: 6
Views: 707

Re: Mostly spicules from July 1

Thanks for the comments and views, Valery, Mark, and Alexandra and viewers.

Thanks for passing on your experience, Valery.
I’d like to use f/40 but the Televue 4x Powermate is too dark. Is there a “brighter” telecentric you could recommend? Is there a preferred 0.5X reducer to use in this case?

Lou
by gabrieli
Mon Jul 01, 2019 9:33 pm
Forum: This is SolarChat !!
Topic: Mostly spicules from July 1
Replies: 6
Views: 707

Mostly spicules from July 1

The images below are from using an Aries ERF on a c9.25 + Televue2X + Quark Combo + Blackfly S(2.8 Mp). The efl was 4600mm. Ther imaging session lasted from 12:30 pm to 1:15 pm, There wasn't much happening by way of surface or edge events. Lou spicules+.jpg spicules-c.jpg 380.jpg 380-.jpg 712.jpg
by gabrieli
Mon Jul 01, 2019 11:28 am
Forum: This is SolarChat !!
Topic: From June 29 and 30
Replies: 11
Views: 1221

Re: From June 29 and 30

Thanks, Valery I have access to the sun in the east from about 10 am and later. Even at the earliest, I would be aiming close to the tops of houses with their hot roofs. I agree with you that ideally a focal length of about 4500 mm would be ideal for the 4.5 µm pixels in the sensor. I plan to try my...
by gabrieli
Mon Jul 01, 2019 12:01 am
Forum: This is SolarChat !!
Topic: From June 29 and 30
Replies: 11
Views: 1221

Re: From June 29 and 30

Thanks for the comment, Mark. Here is a link to the new camera on the FLIR website. Scroll down for the specs. https://www.flir.ca/products/blackfly-s-usb3/?model=BFS-U3-28S5M-C (Canadian site) FLIR seems to be changing their webpages fairly often these days. You can view the prices in your location...
by gabrieli
Sun Jun 30, 2019 9:48 pm
Forum: This is SolarChat !!
Topic: From June 29 and 30
Replies: 11
Views: 1221

From June 29 and 30

These images are a first light for a new FLIR camera (a 2/3", 2.8Mp, 130f/s). The first 2 images were taken with this camera and a Lunt 152 + Quark chromosphere and the last 2 with an Aries ERF in its new cell on a c9.25 + 3x telecentric + Quark Combo chromosphere starting at 12:30 pm on consecutive...
by gabrieli
Thu Jun 27, 2019 5:37 pm
Forum: This is SolarChat !!
Topic: All things nice
Replies: 22
Views: 1518

Re: All things nice

Hi, Alexandra

The video is mesmerizing. I noticed some sudden changes in brightness now and then as the video plays. Is that the result of meteors entering the atmosphere or just changes in the exposure?

Lou
by gabrieli
Tue Jun 25, 2019 12:13 pm
Forum: This is SolarChat !!
Topic: Commercially Available Filter Cells For LARGE ERF's
Replies: 27
Views: 2978

Re: Commercially Available Filter Cells For LARGE ERF's

Hi, Mark It's interesting how they changed the design from 3 robust tabs that secure the cell to the telescope tube to a full circular cell. There could be a slight misdirection in the description of the filter housing, however. When they say "for tube diameters 261 - 300 mm", they don't mean that t...
by gabrieli
Thu Jun 13, 2019 10:27 pm
Forum: This is SolarChat !!
Topic: Commercially Available Filter Cells For LARGE ERF's
Replies: 27
Views: 2978

Re: Commercially Available Filter Cells For LARGE ERF's

The filter cell from TS for my Aries 265 mm ERF finally arrived. This adapts the ERF to my C9.25. It differs slightly from the cell (by MalVeauX)) depicted in a previous post (started by Mark Townley). http://solarchatforum.com/viewtopic.php?f=4&t=26042 My version has the retaining ring right on the...
by gabrieli
Wed May 08, 2019 10:46 am
Forum: This is SolarChat !!
Topic: Commercially Available Filter Cells For LARGE ERF's
Replies: 27
Views: 2978

Re: Commercially Available Filter Cells For LARGE ERF's

Hi, Mark Thanks for beginning this very useful thread and inspiring my first post of this season. I've been looking for a more robust cell for my 265mm Aries ERF. I wrote to TS for information and listed the following requirements: All these measurements are precise Telescope: Celestron C9.25(not Ed...
by gabrieli
Fri Nov 23, 2018 12:15 am
Forum: This is SolarChat !!
Topic: Citizen Science
Replies: 24
Views: 2831

Re: Citizen Science

Hi, Stu This is a great idea. It also gives people a chance to reminisce on better days. I have a feeling, though, that you may have your hands full in editing all the choices presented for your final batch. Anyway, here are my contributions: 6.jpg 4.jpg 1.jpg 13.jpg 12.jpg 11.jpg 10.jpg 9.jpg 8.jpg...
by gabrieli
Mon Nov 05, 2018 10:58 am
Forum: This is SolarChat !!
Topic: In a reflected sunlight.
Replies: 9
Views: 1106

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: 757

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: 7
Views: 976

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