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First attempt at a Full Disk 2-23-2020

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#1 hopskipson

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Posted 24 February 2020 - 09:19 PM

I was able to tune my LS60 SS and use it visually for more than 10 minutes since temps were in the high 40's.  After about 40 minutes I put in my ASI 174 MM to get some imaging done.  Seeing was so-so and pulling out the proms required a lot of work.  There wasn't much interesting on the disk except for a faint filament in the south which didn't show up well. 

 

Sun_122750_lapl6_ap3850ImPPGps1.jpg

 

I'm still having trouble tuning and getting the entire disk to stay in the sweet spot.  Comments and suggestions welcome.


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#2 hopskipson

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Posted 24 February 2020 - 09:21 PM

I colorized the disk.  I'm not sure if I like it.  How does one get a "sun-like" yellow?

 

Sun_122750_lapl6_ap3850ImPPGps2.jpg


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#3 Tyson M

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Posted 24 February 2020 - 09:28 PM

I like the colorized image better to highlight the proms.

 

I will share my thoughts on your issues.

 

As for tuning, once you tune it for proms or surface features, or a combination of both, then you're tuned.  The sweet spot is an inherent feature of the blocking filter it seems, so it is simply a matter of you keeping the sun in that sweet spot for your short imaging run 1-2mins, ect.  

 

Everything appears to be on band (contrast everywhere on the disk and proms), so it seems your problem primarily is uneven illumination not keeping it in the sweet spot.  

 

Hopefully others can chime in with their experiences, perhaps you can have full disk contrast not being in the sweet spot but get uneven illumination as a byproduct.  question.gif


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#4 sunnyday

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Posted 24 February 2020 - 09:34 PM

I had this problem too and I discovered that the temperature can degrade the image, etalon are sensitive to cold lunt sells a heater for the bf.

 

or a hot strip to remove fogging.
if that's your problem like me, with my lunt bf in the cold.

 

ps I prefer full color too.


Edited by sunnyday, 24 February 2020 - 09:35 PM.

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#5 hopskipson

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Posted 25 February 2020 - 06:43 AM

Thanks Tyson and James for the constructive comments.  I didn't bother with the dew heater as I thought it was warm enough. 



#6 rigel123

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Posted 25 February 2020 - 07:25 AM

Nice details James!  To me it looks like the sweet spot is just too narrow to fit the entire disk within it.  I have to use a .5 reducer on my LS60T to get a full disk shot.


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#7 PhotonJohn

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Posted 25 February 2020 - 10:46 AM

   Can't give you much in the way of suggestions, only encouragement. That is a great effort James.  Being a new guy to solar, every imaging session with my Lunt LS60T is a unique experience.  Sometimes there is a large sweet spot, sometimes not.  Living in Florida, cold temps are few and far between, so no problem with fogging. To me, there is no normal session. To consistently produce the quality of images Marty posts just blows me away.  It all comes with experience and practice.  Wish my posts were more helpful.  Anyhow, it is great being a small part of this. Thank you all. So much to learn, so little time.    


Edited by PhotonJohn, 25 February 2020 - 11:08 AM.

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#8 MalVeauX

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Posted 25 February 2020 - 11:24 AM

Looking good James!

 

Very best,


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#9 RickV

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Posted 25 February 2020 - 02:59 PM

Way-2-GO JAMES! waytogo.gif

Keep Them Coming...

 

Best,

Rick


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