October 30th in Ha

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MapleRidge
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October 30th in Ha

Post by MapleRidge » Fri Nov 02, 2018 1:57 am

Hi everyone...

Clear skies have been scarce around here the past month with few days offering more than a few hours of clear sky. This past Tuesday was an exception being clear from dawn to dusk, and work was quiet enough I managed to get some time to view and image over my lunch. As others have reported form their observations on the same day there was little disk activity but many smaller proms and filaments made for good targets.

Seeing was poor and I didn't have high expectations for high resolution work, but I tried all the Ha systems I could...LS75FHa on the William Optics 72mm OTA for full disks, the Daystar Quantum on the C9.25 Edge, and the modded CR-150 OTA fitted with both the Lunt LS80T primary etalon and the DSII module to make a double stack on this this scope. I found the full disk and modded scopes gave the best results.

First, the full disk Ha through the WO 72mm fitted with the LS75FHa front mount etalon and a B1200Ha imaged with the PGR Grasshopper Express (ICX674 chip). The limb is inverted to enhance the proms:
Full-Ha.jpg
Full-Ha.jpg (397.64 KiB) Viewed 169 times
The second has a longer exposure to pull out a little more of the fainter proms and the disk is masked out:
Full-Ha-proms.jpg
Full-Ha-proms.jpg (87.07 KiB) Viewed 169 times
The remaining images were taken with the modded CR-150 in DS mode and a B1800Ha blocker and 3x tele-extender ahead of the camera (ZWO174MM). The first images will highlight the filaments with a trio of them near mid disk and a couple of other small tufts visible against the disk:
Filaments.jpg
Filaments.jpg (448.19 KiB) Viewed 169 times
Filaments-inv.jpg
Filaments-inv.jpg (459.57 KiB) Viewed 169 times
3x_CR150_DSII_122246-ASI.jpg
3x_CR150_DSII_122246-ASI.jpg (267.13 KiB) Viewed 169 times
3x_CR150_DSII_122119-ASI.jpg
3x_CR150_DSII_122119-ASI.jpg (261.53 KiB) Viewed 169 times
The same system was used to image the proms:
3x_CR150_DSII_121019-ASI.jpg
3x_CR150_DSII_121019-ASI.jpg (125.15 KiB) Viewed 169 times
3x_CR150_DSII_121726-ASI.jpg
3x_CR150_DSII_121726-ASI.jpg (66.49 KiB) Viewed 169 times
3x_CR150_DSII_120924-ASI.jpg
3x_CR150_DSII_120924-ASI.jpg (86.75 KiB) Viewed 169 times
NE-Prom.jpg
NE-Prom.jpg (187.25 KiB) Viewed 169 times
NE-Prom-inv.jpg
NE-Prom-inv.jpg (189.42 KiB) Viewed 169 times
This pretty much covers the session. Sunday is supposed to be clear so I hope that is true and the seeing improves as well :?

Questions and comments are always welcome,
Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

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Re: October 30th in Ha

Post by TheSkyBurner » Fri Nov 02, 2018 3:35 am

very neat! I love mods, i actually considered doing the same thing with the ls80 ds filter for the last 2 years. What is the size of the etalon in it?

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Montana
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Re: October 30th in Ha

Post by Montana » Fri Nov 02, 2018 10:20 am

Certainly the proms are the most exciting part of the full disc :) and the close ups are exceptional. Low activity certainly makes hi res a must have :bow

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Re: October 30th in Ha

Post by denababy » Fri Nov 02, 2018 10:27 am

Not much chance of Imaging here in Leicester UK, although the sky has been clearish, just like today ( Friday 2 nd Nov) it is quite milky. So the best I can manage when I get the chance is similar to the 5th and 6th pics, can you get much detail from those? Anyway a great set, as always, thanks for posting.

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Re: October 30th in Ha

Post by gabrieli » Fri Nov 02, 2018 10:51 am

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

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Re: October 30th in Ha

Post by ffellah » Fri Nov 02, 2018 11:06 am

Thank you for the views, Brian. The prominences look really nice. I have not been able to image for the entire month of October...

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Re: October 30th in Ha

Post by MapleRidge » Fri Nov 02, 2018 11:02 pm

Thanks everyone for the replies and comments ...they are always appreciated. :bow

I’m holding out for more sun on Sunday.

Brian
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Cambray, ON Canada

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Re: October 30th in Ha

Post by marktownley » Sat Nov 03, 2018 4:57 pm

Good set of images Brian, you've been getting more sun than me lately.
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Re: October 30th in Ha

Post by MapleRidge » Sat Nov 03, 2018 8:02 pm

Thanks Mark!!!

October has been more cloudy/wet than usual this year, and astronomical pursuits have been limited. Clear skies are still forecast for Sunday, so fingers are crossed fro a sunny day!

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

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