I got a Lunt 50!
- davidem27
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I got a Lunt 50!
Hello everyone!
I recently purchased a used Lunt 50 with PT and a modified helical focuser and I am really happy!
I want to try to figure out the quality of its parts and I would be glad to submit its fresh results to your attention.
Here it is the latest image I took this morning, processed via ImPPG (RL 1.08, 50 - UM 1.65) and a little touch of curve.
Then I merged disc and proms in Photoshop.
Inspite of images obtained with a Lunt 60 (of a friend of mine), this Lunt 50 gives me more "flatty" images.
Considering this is not a brand new telescope, what could be the reasons?
Thanks for your attention
I recently purchased a used Lunt 50 with PT and a modified helical focuser and I am really happy!
I want to try to figure out the quality of its parts and I would be glad to submit its fresh results to your attention.
Here it is the latest image I took this morning, processed via ImPPG (RL 1.08, 50 - UM 1.65) and a little touch of curve.
Then I merged disc and proms in Photoshop.
Inspite of images obtained with a Lunt 60 (of a friend of mine), this Lunt 50 gives me more "flatty" images.
Considering this is not a brand new telescope, what could be the reasons?
Thanks for your attention
- Attachments
-
- 2021-06-22-1003_Sun_Ha_Lunt50_pistr.jpg (656.09 KiB) Viewed 473 times
White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
- dhkaiser
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Re: I got a Lunt 50!
I think your image looks good. No idea what a "flatty" image is.
Dan
South central Indiana
USA
South central Indiana
USA
- Stardust5858
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Re: I got a Lunt 50!
Lovely first light with your new scope. I take it you mean even illumination when you speak of flat image? Thanks for sharing.
10ft x 6ft Solar RoR with Warm Room
Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
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Lunt 60mm Double Stack HA
80ed WL+ Lunt Hershal Wedge + Badder K-Line filter.
100mm AR + Lunt b1800 Ca-K module.
Neq6 Eq Mount.
2.7m Pulsar Dome.
11in Celestron SCT + White Light Filter.
70mm AR Stellavue.
12inch OO Newtonian.
Eq8 r Pro Mount.
- davidem27
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Re: I got a Lunt 50!
Exactly, Stardust.
Thanks for explaining better than me
These are past images of 26th of March, took with Lunt 60 and ASI174 and ASI178, processed only with ImPPG.
They seem a little bit less even illumination (and would like to understand why)
Thanks for explaining better than me
These are past images of 26th of March, took with Lunt 60 and ASI174 and ASI178, processed only with ImPPG.
They seem a little bit less even illumination (and would like to understand why)
- Attachments
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- 178
- 2021-03-26-1139_178_pistr.jpg (619.02 KiB) Viewed 454 times
-
- 174
- 2021-03-26-1058_174_pistr.jpg (264.2 KiB) Viewed 454 times
White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
- Ivan
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Re: I got a Lunt 50!
Great photo.
I see you managed to catch the focus.
I look from a smartphone, but it seems to me that I see weak Newtonian rings. Flats can help remove them and make the background more uniform.
I really like your HDR, by the way, (maybe it will be useful) in ImPPG you can make proms visible by process7ing the file with the surface and not removing the proms separately.
Ivan
I see you managed to catch the focus.
I look from a smartphone, but it seems to me that I see weak Newtonian rings. Flats can help remove them and make the background more uniform.
I really like your HDR, by the way, (maybe it will be useful) in ImPPG you can make proms visible by process7ing the file with the surface and not removing the proms separately.
Ivan
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Re: I got a Lunt 50!
You may not have screwed on the pressure tuner.
Set the shutter speed a little longer than usual (it will be easier to see) and try turning the tuner knob. You can see how the surface darkens or becomes light, for me it usually happens at the edge of the frame.
Ivan
Set the shutter speed a little longer than usual (it will be easier to see) and try turning the tuner knob. You can see how the surface darkens or becomes light, for me it usually happens at the edge of the frame.
Ivan
- davidem27
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Re: I got a Lunt 50!
Yes Ivan, weak Newtonian rings are present and they are going to upset me...
I'll try to put a tilter after the BF but I'm afraid to not reach the focus anymore.
In this image (the first in the first post) I used the camera with its 1,25 nose and inside of it, the VIP barlow module just to increase a few the sampling.
I'll try to put a tilter after the BF but I'm afraid to not reach the focus anymore.
In this image (the first in the first post) I used the camera with its 1,25 nose and inside of it, the VIP barlow module just to increase a few the sampling.
Oh! I have to check it out! Thanks!Ivan wrote:in ImPPG you can make proms visible by process7ing the file with the surface and not removing the proms separately.
Ivan wrote: Set the shutter speed a little longer than usual (it will be easier to see) and try turning the tuner knob. You can see how the surface darkens or becomes light, for me it usually happens at the edge of the frame.
White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
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- Ivan
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Re: I got a Lunt 50!
Tilter is optional. Try to take calibration flats footage. Here is the instruction: https://m.youtube.com/watch?v=h6GjwHtRK80&t=3s
Ivan
Ivan
- davidem27
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Re: I got a Lunt 50!
Superb! Another processing step. My visual observing nature is gonna kill me
White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
- DeepSolar64
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Re: I got a Lunt 50!
Congratulations on the new Lunt 50!
Lunt 8x32 SUNoculars
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Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
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- marktownley
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Re: I got a Lunt 50!
Your just seeing the scopes sweet spot with the 178.
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!
- davidem27
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Re: I got a Lunt 50!
Hello Mark,
and this is a little movie from yesterday, made to try to better understand just its sweetspot: https://youtu.be/3bKR2ba24BE
and this is a little movie from yesterday, made to try to better understand just its sweetspot: https://youtu.be/3bKR2ba24BE
White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200
www.volpetta.com
We are curious. We need equipment, we need seeing, we need time
- Ivan
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Re: I got a Lunt 50!
Try placing the Sun in the left corner of the frame (as in your video) so that part of the disc loses detail and turns white. And spin the tuner a little at a time. This method helped me get rid of the "overexposed" zones or greatly reduce their area.
Ivan
Ivan