February 21st Ha Session

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MapleRidge
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February 21st Ha Session

Post by MapleRidge » Mon Feb 22, 2021 3:58 am

Hello everyone...

Another sunny day here, and the cloud problems form Saturday did not return today and shut me down. A bit milder today too, around -5C this morning while imaging. Initial views through the LS80T really showed the fila-prom on the SW limb very well, with a vivid 3-D effect. AR2803 also showed well as did a few other small proms and filaments.

The first image of the day is a full disk composite of separate disk and limb exposures, with the limb inverted. Imaged through the LS80T/LS75FHa/B1800Ha solar scope with the ASI174MM camera:
Full-Ha-02212021.jpg
Full-Ha-02212021.jpg (491.09 KiB) Viewed 96 times
I changed over to image capture with the modded iStar 150mm, f8 OTA fitted with a pair of Lunt DSII etalons and B1800Ha blocker. A 3x focal extender was used with the ASI174MM camera. The image below is a mosaic of 4 frames of the NE quadrant where AR2803 is found with a small fila-prom and a few other small filaments. Conditions did not produce an even set of images used in the mosaic, but it does show the region well:
NE-Quadrant.jpg
NE-Quadrant.jpg (502.86 KiB) Viewed 96 times
The fila-prom on the SW limb is shown below:
SW-Prom.jpg
SW-Prom.jpg (160.89 KiB) Viewed 96 times
There were proms on the NE and SE limb as well:
3x_IS_2xDSII_104913_out.jpg
3x_IS_2xDSII_104913_out.jpg (358.15 KiB) Viewed 96 times
3x_IS_2xDSII_105025_out.jpg
3x_IS_2xDSII_105025_out.jpg (355.44 KiB) Viewed 96 times
I wanted to try the modded scope with the 4x Powermate, but it took a lot of fiddling to get it to reach focus. Finally got it for the following images, and found a few other spots on the disk to image besides AR2803:
4XIS_2xDSII_112123_out.jpg
4XIS_2xDSII_112123_out.jpg (302.69 KiB) Viewed 96 times
4XIS_2xDSII_112230_out.jpg
4XIS_2xDSII_112230_out.jpg (313.83 KiB) Viewed 96 times
4XIS_2xDSII_112339_out.jpg
4XIS_2xDSII_112339_out.jpg (372.74 KiB) Viewed 96 times
4XIS_2xDSII_112454_out.jpg
4XIS_2xDSII_112454_out.jpg (309.55 KiB) Viewed 96 times
If the weather forecast is to be believed, I will be clouded out for the next few days. I can't complain as I need time to process the weekends deep sky images too ;)

Brian


Brian Colville

Maple Ridge Observatory
Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C9.25 Edge + Stellarvue 110, f7 or C14
Deep Sky Work - Canon 60D (Ha mod), SBIG STF8300/FW8, ONAG
Planetary Work - SBIG CFW10, ASI290MM/ASI462+ADC

8' Diameter Dome
MI250 Mount carrying:
iStar 150mm, f8 OTA Modular Setup
Ha configuration: 2xDSII/B1800Ha/Daystar ERF as modded Ha Scope
WL & CaK configuration: Lunt WL Wedge or Modded B1800CaK Wedge
Lunt LS80PT/LS75FHa/B1200Ha
Daystar Quantum 0.45A SE, Quark Combo Chromosphere,
ASI1600MM, ASI174MM, ASI290MM, PGR Grasshopper Express

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Re: February 21st Ha Session

Post by DeepSolar64 » Mon Feb 22, 2021 4:07 am

Excellent work Brian. The filaprom closeup is superb.

Looking at your images I feel that I am tuning too deep. Tuning through the filaments making them not show up. Or I am just a little out of focus or both. I try to tune visually before I put the camera in where I can visually see the filaments etc. But different features may require slightly different tuning positions and you change the tuning messing things up. Also the camera NEVER focuses where the eyepiece does!

James


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Re: February 21st Ha Session

Post by marktownley » Mon Feb 22, 2021 6:51 am

Good shots Brian! Looks like you were fighting the conditions in the closeups, came out well though.


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Re: February 21st Ha Session

Post by krakatoa1883 » Mon Feb 22, 2021 8:59 am

Great close-ups, Brian, much detailed.


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Re: February 21st Ha Session

Post by EGRAY_OBSERVATORY » Mon Feb 22, 2021 9:21 am

Excellent set of images Brian.

Many thanks
Terry



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Re: February 21st Ha Session

Post by ffellah » Mon Feb 22, 2021 11:18 am

A really good series, Brian. Glad you had some decent weather. The filaprom is excellent.

Franco



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Re: February 21st Ha Session

Post by MapleRidge » Mon Feb 22, 2021 12:56 pm

James, Mark, Raf, Terry, and Franco...

Thanks for the comments and feedback on these images...always very much appreciated :bow

Brian


Brian Colville

Maple Ridge Observatory
Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C9.25 Edge + Stellarvue 110, f7 or C14
Deep Sky Work - Canon 60D (Ha mod), SBIG STF8300/FW8, ONAG
Planetary Work - SBIG CFW10, ASI290MM/ASI462+ADC

8' Diameter Dome
MI250 Mount carrying:
iStar 150mm, f8 OTA Modular Setup
Ha configuration: 2xDSII/B1800Ha/Daystar ERF as modded Ha Scope
WL & CaK configuration: Lunt WL Wedge or Modded B1800CaK Wedge
Lunt LS80PT/LS75FHa/B1200Ha
Daystar Quantum 0.45A SE, Quark Combo Chromosphere,
ASI1600MM, ASI174MM, ASI290MM, PGR Grasshopper Express

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Re: February 21st Ha Session

Post by Montana » Mon Feb 22, 2021 3:44 pm

A great set Brian, not much happening mid disc but lots of lovely filaproms about :hamster: :bow we actually have some late sunshine here but too late for solar observing. After a week of positive temperatures all the Snowdrops, crocus and Iris have burst forth to bring lots of spring colour in the garden here.

Alexandra



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