It was a colourful sunrise
Followed by lots of clouds and turbulent seeing.
This is the 4th of my 5 PST etalons. From the following result, it looks like one that belongs to the "just ok" 80% category. What do you think?
At 9:55am local time, with x2.5 barlow
At 10:25am local time, with x3 barlow
At 10:40 am local time, with X2 barlow
Alfred
17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
Hi Alfred: I like #3 the most, seems to be the sharpest. This etalon seems to be pretty good.
Franco
Franco
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
Thanks Franco. I went back to look at the images captured with my first PST etalon. It may be better than this one. Unfortunately weather doesn't permit imaging today.
For the #3, my settings are -
Exposure : 26 mSec
Gain : 18643
Gamma : 1.88
This etalon is not bright even for me to bring the exposure to < 5 msec necessary for reducing the effects of turbulence.
Alfred
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
Looks good, makes sense what you say about it being a bright etalon, I was looking at the pictures before reading what you put and thought the images looked slightly soft, would make sense with a longer exposure not freezing the seeing.
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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: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
The best F/D (on the camera chip) for IMX174 is about F/18-22. No necessity to go slower - you will not win in the detalization and sure will loss in ability to do a high resolution imaging with short exposures.
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
A difficult test in turbulent conditions. It will be interesting to see the results when seeing improves.
Stu.
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/
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
A nice sample of what the scope/etalon can do...better seeing should make things better. I would say that image #3 is sharpest.
Brian
Brian
Brian Colville
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
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
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
A nice sample of what the scope/etalon can do...better seeing should make things better. I would say that image #3 is sharpest.
Brian
Brian
Brian Colville
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
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
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
Hi Valery,
I have tried imaging with longer exposure and confirmed that it doesn't help. Thanks.
Alfred
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Re: 17Apr18 - ARIES D-ERF on C8 + PST Etalon Images
Thanks Mark, Stu and Brian for your comments. From a few imaging sessions, I have concluded that this is the best etalon (out of the 5 that I have). However it is not able to deliver the high resolution I am looking for. I will continue to use it to find the best that it can deliver.
Alfred
Alfred