50mm DS 'vs' 90mm SS Full Disks - 22nd July
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10484 times
- Contact:
50mm DS 'vs' 90mm SS Full Disks - 22nd July
Monday started cloudy, cool and windy, but very quickly by mid morning the cloud broke and the sun came out, raising temperatures by 10c in about 5 minutes. Clouds were still scudding by and with the rising heat and cumulus peppered blue sky I knew I was going to have to take a lot of frames to get usable data.
I've been playing around so far this year with my ideal double stack setup for full disks; i'd tried my lovely flat LC50 etalon on my SM90 but was never pleased with the outcome, neither was I happy with the LC50 double stacked with another Lunt50 etalon, or with the LC50 stacked on the LS50 scope. I think I have found my answer; The Lunt50 etalon double stacked with the Daystar Quark, with the Baader 0.7x solar telecompressor I get a full disk on the chip of the FLIR GH3 ICX916M camera, giving a nice 2600px full disk. This is what took the disk below, no flats or anything, this is how it comes out.
Ha-FD-DS--bw by Mark Townley, on Flickr
Ha-FD-DS--colour by Mark Townley, on Flickr
The contrast is nice, highlighting the filament and both the active region well. The small proms came out well too! Be sure to double click for the full size view in Flickr.
Next up, compare this with a single stack full disk taken with the SM90, very similar image scale in terms of how much of the ICX916M chip it fills, the contrast isn't as great - which is what you would expect with the single stacked etalon. However I don't think the difference in resolution is quite as much as might be expected - the spicule ring shows some nice detail, but the surface isn't hugely different in terms of detail. Still a nice disk, just different! Again, double click to view full size in Flickr.
Ha-FD-SS-bw by Mark Townley, on Flickr
Ha-FD-SS-colour by Mark Townley, on Flickr
Next up it was time to put the Quark in the back of the SM90 for a bit of closeup double stacking, no telecompressor this time, but binning the ICX916M. I was struggling with the seeing as by now was getting close to midday. First up the filament in the north:
filament-bw by Mark Townley, on Flickr
filament-colour by Mark Townley, on Flickr
Next up the active region, which being on the equator is cycle 24.
ar-ds-bw by Mark Townley, on Flickr
ar-ds-colour by Mark Townley, on Flickr
It's clear now at dusk this evening, and i'm hoping it stays that way till first thing in the morning in which case I can get some more imaging in before the heat of the day builds too much.
Hope you like!
Mark
I've been playing around so far this year with my ideal double stack setup for full disks; i'd tried my lovely flat LC50 etalon on my SM90 but was never pleased with the outcome, neither was I happy with the LC50 double stacked with another Lunt50 etalon, or with the LC50 stacked on the LS50 scope. I think I have found my answer; The Lunt50 etalon double stacked with the Daystar Quark, with the Baader 0.7x solar telecompressor I get a full disk on the chip of the FLIR GH3 ICX916M camera, giving a nice 2600px full disk. This is what took the disk below, no flats or anything, this is how it comes out.
Ha-FD-DS--bw by Mark Townley, on Flickr
Ha-FD-DS--colour by Mark Townley, on Flickr
The contrast is nice, highlighting the filament and both the active region well. The small proms came out well too! Be sure to double click for the full size view in Flickr.
Next up, compare this with a single stack full disk taken with the SM90, very similar image scale in terms of how much of the ICX916M chip it fills, the contrast isn't as great - which is what you would expect with the single stacked etalon. However I don't think the difference in resolution is quite as much as might be expected - the spicule ring shows some nice detail, but the surface isn't hugely different in terms of detail. Still a nice disk, just different! Again, double click to view full size in Flickr.
Ha-FD-SS-bw by Mark Townley, on Flickr
Ha-FD-SS-colour by Mark Townley, on Flickr
Next up it was time to put the Quark in the back of the SM90 for a bit of closeup double stacking, no telecompressor this time, but binning the ICX916M. I was struggling with the seeing as by now was getting close to midday. First up the filament in the north:
filament-bw by Mark Townley, on Flickr
filament-colour by Mark Townley, on Flickr
Next up the active region, which being on the equator is cycle 24.
ar-ds-bw by Mark Townley, on Flickr
ar-ds-colour by Mark Townley, on Flickr
It's clear now at dusk this evening, and i'm hoping it stays that way till first thing in the morning in which case I can get some more imaging in before the heat of the day builds too much.
Hope you like!
Mark
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!
-
- Almost There...
- Posts: 1160
- Joined: Tue Jan 03, 2012 3:32 pm
- Location: Begues, Barcelona, Spain
- MAURITS
- Way More Fun to Share It!!
- Posts: 8615
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2464 times
- Been thanked: 4880 times
- Contact:
-
- Almost There...
- Posts: 783
- Joined: Tue Feb 03, 2015 3:44 pm
- Location: Vista, CA
- Has thanked: 141 times
- Been thanked: 240 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Great compares.
Explore Scientific 152mm f6.5 achromat
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
Aeries D-ERF
Quark Chromosphere f27 native, (f14 when focal reduced)
Mallincam .5x focal reducer (large format)
12nm Filter
ZWO174 (IMX249 chip 5um)
Huge Sense of Adventure Viewing Creation
- MapleRidge
- Way More Fun to Share It!!
- Posts: 10257
- Joined: Fri Jan 13, 2012 11:58 pm
- Location: Cambray, ON Canada
- Has thanked: 64 times
- Been thanked: 4427 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Great set of image Mark, and the DS with the Quark/LS50 turned out very well.
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
- MapleRidge
- Way More Fun to Share It!!
- Posts: 10257
- Joined: Fri Jan 13, 2012 11:58 pm
- Location: Cambray, ON Canada
- Has thanked: 64 times
- Been thanked: 4427 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Great set of image Mark, and the DS with the Quark/LS50 turned out very well.
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
-
- Way More Fun to Share It!!
- Posts: 2410
- Joined: Thu May 24, 2012 12:12 am
- Location: Woodbridge, Ontario, Canada
- Been thanked: 1735 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Hi, Mark
Your SM90 really puts out some sharp detail at higher res.
I've just recently discovered where the binning option is in the FLIR Spinnaker software that runs all my Blackfly S cameras.
With a high pixel count camera the gain in brightness is very noticeable while the reduced pixel count is still useful.
Lou
Your SM90 really puts out some sharp detail at higher res.
I've just recently discovered where the binning option is in the FLIR Spinnaker software that runs all my Blackfly S cameras.
With a high pixel count camera the gain in brightness is very noticeable while the reduced pixel count is still useful.
Lou
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10484 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Thanks guys! A blue morning here in Brierley Hills, I think I will give the HaT a go first, see if the seeing will play ball for me.
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!
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8906 times
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
These are excellent Mark, I think the resolution on the 90mm disc is far superior to the 50mm certainly around the little active region, you will notice more difference in years to come
Absolutely gorgeous blue skies here this morning and it would have been brilliant to test my CaK wedge on the little AR, why does this never happen at a weekend?
Alexandra
Absolutely gorgeous blue skies here this morning and it would have been brilliant to test my CaK wedge on the little AR, why does this never happen at a weekend?
Alexandra
- pedro
- Way More Fun to Share It!!
- Posts: 12320
- Joined: Sun May 01, 2016 8:26 pm
- Location: Portugal
- Has thanked: 14 times
- Been thanked: 6691 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Very interesting results Mark. I never have good results with DS etalons
Pedro Re'
https://pedroreastrophotography.com/
https://pedroreastrophotography.com/
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10484 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Thanks Alexandra, thanks Pedro. Just playing with some pics I took earlier today.
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!
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Mark, that first image is very impressive from a small scope. That's the kind of full disk image I've been wanting and I don't think I can get it from my 40mm scope. Thanks to you I called Lunt Solar today and placed an order.
Phil
Phil
- marktownley
- Librarian
- Posts: 42545
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20813 times
- Been thanked: 10484 times
- Contact:
Re: 50mm DS 'vs' 90mm SS Full Disks - 22nd July
Thanks Phil, I hope the etalon you get is a good one!
Mark
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!