June 20 - HA & WL

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vineyard
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June 20 - HA & WL

Post by vineyard »

Seeing was better in the morning (luckily when I took these images) - visual still splendid but not as good as Fri 17 wrt seeing. The WL is w the ETX125 but w solar continuum filter instead of the long pass - the long pass is much better at freezing seeing.

Cheers
Attachments
Sun_091241_200622_ZWO ASI178MM-Cool_Gain=233(off)_Exposure=.8ms_HA_FD_5_qe3_ap2366_imppg(220612WL)_gimp_wm.jpg
Sun_091241_200622_ZWO ASI178MM-Cool_Gain=233(off)_Exposure=.8ms_HA_FD_5_qe3_ap2366_imppg(220612WL)_gimp_wm.jpg (1.32 MiB) Viewed 327 times
Sun_091241_200622_ZWO ASI178MM-Cool_Gain=233(off)_Exposure=.8ms_HA_FD_5_qe3_ap2366_imppg(220612WL)_gimp_wm_no prom.jpg
Sun_091241_200622_ZWO ASI178MM-Cool_Gain=233(off)_Exposure=.8ms_HA_FD_5_qe3_ap2366_imppg(220612WL)_gimp_wm_no prom.jpg (739.62 KiB) Viewed 327 times
Sun_095229_200622_ZWO ASI224MC_Gain=200(off)_Exposure=2.2ms_WL_ETX_solar continuum filter_25PMbin2_5_qe3_ap775_imppg(220620WL)_gimp.png
Sun_095229_200622_ZWO ASI224MC_Gain=200(off)_Exposure=2.2ms_WL_ETX_solar continuum filter_25PMbin2_5_qe3_ap775_imppg(220620WL)_gimp.png (1.56 MiB) Viewed 327 times
Sun_093334_200622_ZWO ASI178MM-Cool_Gain=110(off)_Exposure=1.0ms_HA_FD_ROI_10_qe3_ap1066_imppg(220310)_gimp_wm.jpg
Sun_093334_200622_ZWO ASI178MM-Cool_Gain=110(off)_Exposure=1.0ms_HA_FD_ROI_10_qe3_ap1066_imppg(220310)_gimp_wm.jpg (117.35 KiB) Viewed 327 times
Sun_094334_200622_ZWO ASI224MC_Gain=200(off)_Exposure=2.1ms_WL_ETX_solar continuum filter_25PMbin2_10_qe3_ap552_imppg(220620WL)_gimp.png
Sun_094334_200622_ZWO ASI224MC_Gain=200(off)_Exposure=2.1ms_WL_ETX_solar continuum filter_25PMbin2_10_qe3_ap552_imppg(220620WL)_gimp.png (310.79 KiB) Viewed 327 times
Sun_092512_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_10_qe3_ap946_imppg(220125)_gimp_wm.jpg
Sun_092512_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_10_qe3_ap946_imppg(220125)_gimp_wm.jpg (116.8 KiB) Viewed 327 times
Sun_092350_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_10_qe3_ap1376_imppg(220125)_gimp_wm.jpg
Sun_092350_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_10_qe3_ap1376_imppg(220125)_gimp_wm.jpg (171.93 KiB) Viewed 327 times
Sun_091800_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap1072_imppg(220125)_gimp_wm.jpg
Sun_091800_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap1072_imppg(220125)_gimp_wm.jpg (92.86 KiB) Viewed 327 times
Sun_092018_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap752_imppg(220505)_gimp_wm.jpg
Sun_092018_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap752_imppg(220505)_gimp_wm.jpg (60.47 KiB) Viewed 327 times
Sun_092855_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap661_imppg(220125)_gimp_wm.jpg
Sun_092855_200622_ZWO ASI290MM_Gain=110(off)_Exposure=2.9ms_HA_25PMbin2_25_qe3_ap661_imppg(220125)_gimp_wm.jpg (96.44 KiB) Viewed 327 times


vineyard
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Re: June 20 - HA & WL

Post by vineyard »

Oh dear, there's a definite grid pattern in the 4th image (the ROI of the 178MM full disk). Hmm.


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Re: June 20 - HA & WL

Post by ffellah »

Very nice !

Franco


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Re: June 20 - HA & WL

Post by vineyard »

Thanks Franco, that's v kind. I'm a bit perturbed by the grid pattern - I've heard about that with some 178MM chips so will have to research what the consequences of that are. Ah well.


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Re: June 20 - HA & WL

Post by marktownley »

Looking good there Vin!


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Re: June 20 - HA & WL

Post by vineyard »

Thanks Mark! I read somewhere that that long filament is longer than the distance between the Earth & the moon? Crazy if correct. The sheer scale of things.


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Re: June 20 - HA & WL

Post by AndiesHandyHandies »

Hi

Nice fine details running down the centre top spot group.

Cheers. Andrew.


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Re: June 20 - HA & WL

Post by vineyard »

Thanks Andrew. Yes there was so much going on up there today. I wonder if anyone had a chance to do any animations. Cheers


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Re: June 20 - HA & WL

Post by RodAstro »

Hi
What scope and mount are you using for the Ha?
If it is an EQ mount you could try moving the mount off polar alignment, this will cause some drift in the exposure, then when you stack your images the grid pattern wont be in the same place on each frame and the pattern will disappear.
The key here is to get the drift right for the exposure time sometimes if your exposure times are fast enough just turning the drive off whilst imaging may work.

Cheers Rod


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Re: June 20 - HA & WL

Post by MAURITS »

Nice details Vin.


Regards,
Maurits

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Re: June 20 - HA & WL

Post by vineyard »

Thanks Maurits, that's v kind. Rod that's ingenious - the equivalent of dithering for DSOs! The scope is a little old TV76 (the single-speed focuser version so quite a few yrs old!), and yes you got it for those shots I had them mounted side by side on my DSO EQ mount (an old Avalon, the now discontinued synscan version). I don't really want to mess w the polar alignment but I think in synscan I can change the tracking speed away from solar which would make it drift. I use an old USB2 laptop so it can take up to 5 mins to get the images (depending on how many I'm going for) so the sun may have drifted completely out. Alternatively I can just an old alt-az tracking mount (which is what I normally do & perhaps that's the reason why I haven't noticed that grid pattern before b/c the alt-az doesn't hold a target as precisely as the EQ mount). Thanks!


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Re: June 20 - HA & WL

Post by RodAstro »

I have used this method before with a QHY camera so fingers crossed.

Rod


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