Monday Sun 21st May
- Carbon60
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Monday Sun 21st May
A few from this morning. The conditions weren't ideal and rapidly deteriorated during the session with variable seeing and clarity. Haze built pretty quickly, deteriorating image quality.
First up a hydrogen alpha FD. DS Lunt 60/2.5x Televue Powermate/acA1920-155um. Four pane mosaic.
20180521_Ha1_FD by Stuart Green, on Flickr
Then over to the blue end. CaK FD 72mm f6 refractor with Lunt B600 Cak module and 2.5x Powermate, same camera. Two panes.
20180521_CaK_FD_Mono by Stuart Green, on Flickr
20180521_CaK_FD_Colour by Stuart Green, on Flickr
Finally back to the red. 150mm/DS Lunt 35 mod. 2.5x Powermate. Close view of a little magnetic activity in the chromosphere.
20180521_Ha_150_35_1 by Stuart Green, on Flickr
Finally a prom shot using the same setup.
20180521_Prom1 by Stuart Green, on Flickr
Thanks for looking.
Stu.
First up a hydrogen alpha FD. DS Lunt 60/2.5x Televue Powermate/acA1920-155um. Four pane mosaic.
20180521_Ha1_FD by Stuart Green, on Flickr
Then over to the blue end. CaK FD 72mm f6 refractor with Lunt B600 Cak module and 2.5x Powermate, same camera. Two panes.
20180521_CaK_FD_Mono by Stuart Green, on Flickr
20180521_CaK_FD_Colour by Stuart Green, on Flickr
Finally back to the red. 150mm/DS Lunt 35 mod. 2.5x Powermate. Close view of a little magnetic activity in the chromosphere.
20180521_Ha_150_35_1 by Stuart Green, on Flickr
Finally a prom shot using the same setup.
20180521_Prom1 by Stuart Green, on Flickr
Thanks for looking.
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/
- ffellah
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Re: Monday Sun 21st May
All good but the last two are my favorites. Particularly the one before the last, the close-up of the surface. Beautiful detail and chromosphere drama....
Franco
Franco
- marktownley
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Re: Monday Sun 21st May
Great outcomes Stu!
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!
- Carbon60
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Re: Monday Sun 21st May
Many thanks, Franco & Mark.
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/
- mattwastell
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- Carbon60
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Re: Monday Sun 21st May
Many thanks, Matt.
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/
- Montana
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Re: Monday Sun 21st May
Nice to see a hot spot on the disc, my favourite is the prom at the end
Alexandra
Alexandra
- Carbon60
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Re: Monday Sun 21st May
Thanks, Alexandra. Hopefully more to come over the weekend.
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/
- Valery
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Re: Monday Sun 21st May
Very nice series of images, Stu.
The images with the DS Lunt 35 is the most impressive.
BTW Do you plan to use this LS35 based filtering system with your 10" RC scope?
BTW. I am going to make LS35 mod myself. Can you please show the actual mechanical solution of this DS LS35?
Thanks,
Valery
The images with the DS Lunt 35 is the most impressive.
BTW Do you plan to use this LS35 based filtering system with your 10" RC scope?
BTW. I am going to make LS35 mod myself. Can you please show the actual mechanical solution of this DS LS35?
Thanks,
Valery
"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.
- Carbon60
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Re: Monday Sun 21st May
Many thanks, Alex.
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/
- Carbon60
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Re: Monday Sun 21st May
Hi Valery,Valery wrote: ↑Sat May 26, 2018 2:54 am Very nice series of images, Stu.
The images with the DS Lunt 35 is the most impressive.
BTW Do you plan to use this LS35 based filtering system with your 10" RC scope?
BTW. I am going to make LS35 mod myself. Can you please show the actual mechanical solution of this DS LS35?
Thanks,
Valery
For the 10" RCT I'm using a single stacked Lunt 35. The mechanism for holding this on the back end of the scope is shown below. The black tube houses the collimating lens (negative 300mm bi-concave, which I want to change for a plano-concave) which is inserted into the back of the RCT. The aluminium tube houses the Lunt35 using sets of retaining screws so that I can position it and align it accurately with the optical axis. Slots within the tube provide access to the thumb screw to tune the etalon. The front of this tube is threaded to match the rear of the RCT when the 2" holder is removed.
For the 150mm/Lunt 35 mod, I mount the Lunt on the end of my refractor using rings mounted on a long dovetail bar which I've drilled and bolted to the focuser (this is from a Vixen 80mm refractor that was cannibalised for my original PST mod) The vixen focuser already had the receiving threaded bolt holes from new. The ring mounts again allow me to align the Lunt. Both etalons on the front of the Lunt are easily accessible in this configuration and can be 'clocked' relative to one another and tuned to achieve the best, most uniform, image. The red 'cup' shields the front etalon, but is not necessary and I'm planning to machine this off. However, as with the RCT, there is a tube attached to the red 'cup' which holds the collimating lens (negative 250mm plano-concave).
I hope this helps.
BTW, I use a circular polarising filter between the two etalons to reduce reflections.
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/
- Valery
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Re: Monday Sun 21st May
Thanks a lot, Stu. This really helps.
Some more questions if I may.
1. When your native LS35THa etalon is tuned to the center of the H-a what is the gap between the
base and the etalon back plate at the thumb screw place ?
In my native LS35THa etalon the gap is zero. The etalon stays perfectly perpendicularly to the collimated beam.
I am wonder - at any weather and at the atmosphere pressure around 30" (760mm mercury column) the etalon stays at the CWL.
This makes sweet spot round and centered. My double stack LS35F has about 0,65mm to 0,7mm gap at thumb screw when tuned
to the CWL.
2. Which of your etalons is more contrasty and which is more bright?
My double stack etalon is more contrasty and more bright. Too bad it requires such a tilt to come to CWL.
Thanks,
Valery
Some more questions if I may.
1. When your native LS35THa etalon is tuned to the center of the H-a what is the gap between the
base and the etalon back plate at the thumb screw place ?
In my native LS35THa etalon the gap is zero. The etalon stays perfectly perpendicularly to the collimated beam.
I am wonder - at any weather and at the atmosphere pressure around 30" (760mm mercury column) the etalon stays at the CWL.
This makes sweet spot round and centered. My double stack LS35F has about 0,65mm to 0,7mm gap at thumb screw when tuned
to the CWL.
2. Which of your etalons is more contrasty and which is more bright?
My double stack etalon is more contrasty and more bright. Too bad it requires such a tilt to come to CWL.
Thanks,
Valery
"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.
- marktownley
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Re: Monday Sun 21st May
Nice pics of the equipment stu
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!
- Carbon60
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Re: Monday Sun 21st May
Hi Valery,
I'm not sure that I have sufficient experience with either setup at the moment to give you a definitive answer. I'm still tweaking the alignment and positioning of the Lunts which changes the tuning.
I'll keep an eye on things and get back to you once the equipment has settled down.
Stu.
I'm not sure that I have sufficient experience with either setup at the moment to give you a definitive answer. I'm still tweaking the alignment and positioning of the Lunts which changes the tuning.
I'll keep an eye on things and get back to you once the equipment has settled down.
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/