good morning, everyone,
the clouds came back late at night on the Albion plateau. I still managed to catch the sun in a very tiny lightening (before everything is gray!) (single 17s video! viva the 60img/s of the 178mm... and the SSD!)...)... as much to say that about the setting, there is only the strict minimum! I used an old flat to reduce the frame of the sensor, for the blow it added the interference fringes which were in the flat...
otherwise, fs60 with sm40 double stack, glasspath x1.25, BF10 and zwo178mm at 12h53 UT, reduced to 75%!
cordialy,
stéphane - france
halpha sun on March 9th
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Re: halpha sun on March 9th
Shame about the rings. I don't think a flat is a good idea with a full disk? lots of detail in the image.
Robert
Robert
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Re: halpha sun on March 9th
At least you're seeing the Sun, Stephanie. Not a lot of it here to speak of.
Stu.
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Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
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Re: halpha sun on March 9th
flat is a good idea with a full disk with zwo178mm because : viewtopic.php?t=20973
cordialy
stéphane - france
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Re: halpha sun on March 9th
Gamma at 50+ sounds better to me. I have seen patterns like that using other cameras at extreme settings.
Keep trying things☺
Robert
Keep trying things☺
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Re: halpha sun on March 9th
Hi Stephane,
Sometimes flats can help with getting rid of NR. Now I use an interference eliminator to get rid of the NR. It is more reliable.
Alfred
Sometimes flats can help with getting rid of NR. Now I use an interference eliminator to get rid of the NR. It is more reliable.
Alfred
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Re: halpha sun on March 9th
Hi,
NR = Newton Rings, I guess?
I have a problem with NR because of the glasspath. But it's gonna work out with a good tilt ring adjustment.
On the other hand, the 178mm pattern is more complicated to solve ( whatever the value of gamma )... except with a flat.
Here, the same picture without flat (with gamma=1 and gain=134):
cordialy
stéphane - france
NR = Newton Rings, I guess?
I have a problem with NR because of the glasspath. But it's gonna work out with a good tilt ring adjustment.
On the other hand, the 178mm pattern is more complicated to solve ( whatever the value of gamma )... except with a flat.
Here, the same picture without flat (with gamma=1 and gain=134):
cordialy
stéphane - france
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Re: halpha sun on March 9th
Nice image Stephane!
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: halpha sun on March 9th
Super image, I hope you have some luck getting rid of the rings have you tried just letting the full disc drift across the image during capture, then Autostakkert will remove them.
Alexandra
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Re: halpha sun on March 9th
A real pity about the Newton rings
regards Rainer
Observatorio Real de 14
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Observatorio Real de 14
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North 22° West 101°
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Re: halpha sun on March 9th
Hi Stephane...
Nice to see your image...lucky to have caught it.
Brian
Nice to see your image...lucky to have caught it.
Brian
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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:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM