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A few from February 12th

Posted: Wed Feb 14, 2018 5:11 am
by MapleRidge
Hi everyone...

I finally had a clear day that I could spend some time at the scope and not be clouded out after 10 minutes :shock: To top if off we have AR2699 putting on a great show after a long stretch of low activity. In addition to the large AR there were some nice proms too!!!

The images below were taken through the LS80T/B1200Ha with a LS75FHa front mount etalon as a double stack. This is a composite of separate disk and limb images and presented with multiple options for the palette:
Full-Ha.jpg
Positive disk and limb
Full-Ha.jpg (486.86 KiB) Viewed 466 times
Full-Ha2.jpg
Positive disk and negative limb
Full-Ha2.jpg (568.97 KiB) Viewed 466 times
Full-Ha3.jpg
Negative disk and positive limb
Full-Ha3.jpg (543.07 KiB) Viewed 466 times
Full-Ha4.jpg
Colorized with positive disk and limb
Full-Ha4.jpg (673.18 KiB) Viewed 466 times
The seeing was typical of the winter conditions, but I did grab a WL and CaK image through the iStar 150mm, f8 OTA which are presented below:
IS__WL_121137-ASI.jpg
Lunt solar wedge + Baader continuum filter
IS__WL_121137-ASI.jpg (611.37 KiB) Viewed 466 times
IS__CaKK_122411-ASI.jpg
Lunt B1800 CaK wedge + Baader CaK
IS__CaKK_122411-ASI.jpg (560.85 KiB) Viewed 466 times
Due to the poor seeing I only grabbed WL with the 3x barlow:
3x_IS_WL_121641-ASI.jpg
3x Tele-extender + Lunt solar wedge + Baader continuum filter
3x_IS_WL_121641-ASI.jpg (901.28 KiB) Viewed 466 times
I was really looking forward to being able to grab some hifger resolution Ha images, so the camera was moved to the modded CR-150/DSII/B1800Ha setup with the 3x tele-extender ahead of the camera. The image below is a 2 frame mosaic of AR2699:
AR2699-Ha.jpg
Positive
AR2699-Ha.jpg (464.95 KiB) Viewed 466 times
AR2699-Ha-inv.jpg
Inverted
AR2699-Ha-inv.jpg (493.73 KiB) Viewed 466 times
The final target was the prom on the eastern limb:
3x_CR150_DSII_125617-ASI.jpg
Shorter Exposure
3x_CR150_DSII_125617-ASI.jpg (142.26 KiB) Viewed 466 times
3x_CR150_DSII_125448-ASI.jpg
Longer Exposure
3x_CR150_DSII_125448-ASI.jpg (132.03 KiB) Viewed 466 times
All images were taken with the Grasshopper Express (ICX674 chip) camera.

That pretty much covers the imaging session from Monday. I'll be happy if there is another chance to grab some images before this beauty rotates off the limb!

Questions and comments are always welcome,
Brian

Re: A few from February 12th

Posted: Wed Feb 14, 2018 6:39 am
by marktownley
That's a real nice series of images Brian, glad you are able to get some sun. I'm hoping the weather is kind to me in the weeks ahead.

Re: A few from February 12th

Posted: Wed Feb 14, 2018 6:43 am
by Derek Klepp
Brian some great pics there.I have just been having a quick visual with the 60mm scope.Absolute scorcher here today I,m up to 11l of fluid so far today.
Even the tripod legs were warm to touch after a quick look.
Derek

Re: A few from February 12th

Posted: Wed Feb 14, 2018 12:55 pm
by ffellah
A great set of images, Brian. You captured 2699 and the large prominences really well.

Well done.... :beanie: :band

Franco

Re: A few from February 12th

Posted: Wed Feb 14, 2018 3:38 pm
by eroel
Brian:
You had quite a good session, very good images all of them, specially the Ha ones.
Best regards, I am clouded at the moment.
Eric.

Re: A few from February 12th

Posted: Wed Feb 14, 2018 5:17 pm
by robert
Lovely collection. Everything covered!
Robert

Re: A few from February 12th

Posted: Wed Feb 14, 2018 5:26 pm
by MapleRidge
Mark, Derek, Franco, Eric, and Robert...

My thanks to each of you for your feedback on the session...always appreciated :bow

Derek...the heat makes outdoor work difficult, and keeping hydrated is a challenge. What are the daytime highs running there these days? We have had a relatively cold winter with lots of snow...a short mild spell in mid January melted the snow, but the cold returned with a good amount of snow again. I can always dress warmer to work outside int he winter, but staying cool in heat isn't easy.

Take care all,
Brian

Re: A few from February 12th

Posted: Wed Feb 14, 2018 5:51 pm
by Montana
These are cracking Brian, I think picture 1 is my favourite, the prominences are huge! I love the close ups too :bow :hamster:
Alexandra

Re: A few from February 12th

Posted: Wed Feb 14, 2018 11:14 pm
by MapleRidge
Thanks Alexandra...

It was really a treat to get this AR after a long drought of large scale activity. The proms look great in the images, but it took the camera to pull them up as I didn’t see much of them visually.

Brian

Re: A few from February 12th

Posted: Thu Feb 15, 2018 9:01 am
by Derek Klepp
Daytime highs are in the mid 30s but that’s in the shade.its the humidity that’s the killer.

Re: A few from February 12th

Posted: Thu Feb 15, 2018 1:34 pm
by MapleRidge
Derek...

That is about the worse we get for heat and humidity! I was afraid you were going to say it was in the 40's.

Brian