Solar Activity 14Nov.2021
- dccole9
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Solar Activity 14Nov.2021
It looks like CaK and White Light are showing signs of a new spot near the limb at about the 8 o'clock position. The seeing was horrendous here. I've also been having trouble getting decent contrast when dialing in the H-alpha pressure tuner. Any recommendations?
Thanks,
Chris
Solar Activity 14Nov2021 by Chris Cole, on Flickr
AR 2894 14Nov2021 by Chris Cole, on Flickr
AR 2895 14Nov2021 by Chris Cole, on Flickr
Thanks,
Chris
Solar Activity 14Nov2021 by Chris Cole, on Flickr
AR 2894 14Nov2021 by Chris Cole, on Flickr
AR 2895 14Nov2021 by Chris Cole, on Flickr
Lunt LS80tHa
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/
- DeepSolar64
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Re: Solar Activity 14Nov.2021
Very nice work Chris. That Lunt setup does quite well.
Are you single stacked or double stacked? Double stacking is a good way to increase contrast.
James
Are you single stacked or double stacked? Double stacking is a good way to increase contrast.
James
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Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
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Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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- Montana
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Re: Solar Activity 14Nov.2021
Beautiful set of images
For a single stack that is not bad contrast, can you describe the problem a little more?
Do you reset the pressure tuner knob before you start to tune each time?
Alexandra
For a single stack that is not bad contrast, can you describe the problem a little more?
Do you reset the pressure tuner knob before you start to tune each time?
Alexandra
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Re: Solar Activity 14Nov.2021
Excellent presentation Chris.
Possibly a tad more contrast at the processing stage, but as you say about the seeing conditions, may not be the answer.
Thanks for sharing
Terry
Possibly a tad more contrast at the processing stage, but as you say about the seeing conditions, may not be the answer.
Thanks for sharing
Terry
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Re: Solar Activity 14Nov.2021
Nice images, Chris.
Resetting the pressure tuner can help, as Alexandra suggests. You might also try building up a full disk as a mosaic since your quadrant images look quite uniform. As for increasing contrast, it can be accomplished during processing, but double stacking is a better option.
Stu.
Resetting the pressure tuner can help, as Alexandra suggests. You might also try building up a full disk as a mosaic since your quadrant images look quite uniform. As for increasing contrast, it can be accomplished during processing, but double stacking is a better option.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- dccole9
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Re: Solar Activity 14Nov.2021
All,
I was afraid some of you would say to try a double stack. I hope to get an extra element in the future, but not until I've reached the limits of what the current setup can do.
Below was probably the last decent capture of h-alpha I've had in awhile. This was back in September:
Solar Activity 11Sept2021 by Chris Cole, on Flickr
AR 2866,2868,2869 11Sept2021 by Chris Cole, on Flickr
On this day, the sun was definitely higher so seeing was probably not as much of an issue. I also used an ASI174mm instead so the active region image required a barlow. I'm preferring to use the ASI183mm these days since the pixels are less than half the size of the ASI174mm allowing me to do a full disk capture and skip the barlow step.
I know that even illumination of the disk is not possible but you may notice the uneven illumination of the full h-alpha disk varies between the days. I also know that when adjusting the pressure tuner, this "uneveness" occurs throughout the disk. Could this be a problem? Is using the ASI183 a bad fit for this setup? I do unscrew and reset the pressure tuner during every session.
Thanks for all the help,
Chris
I was afraid some of you would say to try a double stack. I hope to get an extra element in the future, but not until I've reached the limits of what the current setup can do.
Below was probably the last decent capture of h-alpha I've had in awhile. This was back in September:
Solar Activity 11Sept2021 by Chris Cole, on Flickr
AR 2866,2868,2869 11Sept2021 by Chris Cole, on Flickr
On this day, the sun was definitely higher so seeing was probably not as much of an issue. I also used an ASI174mm instead so the active region image required a barlow. I'm preferring to use the ASI183mm these days since the pixels are less than half the size of the ASI174mm allowing me to do a full disk capture and skip the barlow step.
I know that even illumination of the disk is not possible but you may notice the uneven illumination of the full h-alpha disk varies between the days. I also know that when adjusting the pressure tuner, this "uneveness" occurs throughout the disk. Could this be a problem? Is using the ASI183 a bad fit for this setup? I do unscrew and reset the pressure tuner during every session.
Thanks for all the help,
Chris
Lunt LS80tHa
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/
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Re: Solar Activity 14Nov.2021
Thanks Chris for the added images of the 11th September'21 and these are very similar to the first sets, where the presentation is excellent and nice to see "side-by-side".
Looking at these on Flickr, certainly shows much more detail and no suggestions, other than trying different Contrast and Brightness settings in processing, which you might find pleasing.
Thanks again for sharing
Terry
Looking at these on Flickr, certainly shows much more detail and no suggestions, other than trying different Contrast and Brightness settings in processing, which you might find pleasing.
Thanks again for sharing
Terry
- marktownley
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Re: Solar Activity 14Nov.2021
Nice shots Chris! Try moving the Ha image around the fov of the 183 chip to find the point where it is most evenly illuminated.
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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Re: Solar Activity 14Nov.2021
These look good Chris, contrast looks right for a SS but as others have mentioned you can adjust that more in processing. Mark has a good suggestion about moving the image around in the FOV of your camera to get the most even illumination and you can crank up the gamma to center the brighter portion of the disk and then turn off gamma or crank it back down to capture the image.
Warren
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Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M
Player One Saturn-M SQR
https://www.astrobin.com/users/rigel123/
- dccole9
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Re: Solar Activity 14Nov.2021
Thanks for the suggestions. It hadn't hit me to move the disk around on the sensor for even illumination considering I do that already for CaK
Thanks again
Chris
Thanks again
Chris
Lunt LS80tHa
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/
Lunt Herschel Wedge
Lunt CaK B1200 module
ZWO ASI174mm, ASI183mm
Flickr site: https://www.flickr.com/photos/dynamic_universe/