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Solar Analemma. This outstanding image from Alexandra Hart taken over a period of 4 years charts the midday position of the sun in the sky throughout the year. The north–south component of the analemma results from the change in the Sun's declination due to the tilt of Earth's axis of rotation. The east–west component results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.

Merry Christmas, Happy New Year and looking forward to a great solar cycle 25!

Welcome to Solar Chat! The best forum for Solar Astronomy
Moving forward from solar cycle 24 to 25

Search found 386 matches

by Starry Jack
Sat Jan 18, 2020 1:29 am
Forum: This is SolarChat !!
Topic: Solar Processing Tutorial (Rapid Workflow) for HA | Jan 16th 2020
Replies: 9
Views: 147

Re: Solar Processing Tutorial (Rapid Workflow) for HA | Jan 16th 2020

Mind. Blown. OK...I watched this at 1.5x speed just to get the overall feel...holy cow what a range of tools and artistic judgements you make so effortlessly! Now I'll go back multiple times and decompose and manually create a cheat sheet for myself (I'll happily share if folks want it). You've real...
by Starry Jack
Mon Jan 13, 2020 6:45 pm
Forum: This is SolarChat !!
Topic: Lucky me ...
Replies: 7
Views: 165

Re: Lucky me ...

Agreed! That is wonderful.

I also picked up much expensive equipment in response to my prayer request on the prayer chain. Someone saw my request and I had new equipment for Astro ministry in a week.
by Starry Jack
Tue Jan 07, 2020 2:58 am
Forum: This is SolarChat !!
Topic: AR2755 in High Res | Jan 6th 2020
Replies: 15
Views: 179

Re: AR2755 in High Res | Jan 6th 2020

Marty,
These images seem smoother than other processing I’ve seen you prefer and I think I like it! What is the difference in technique?

Jack
by Starry Jack
Wed Jan 01, 2020 2:45 am
Forum: This is SolarChat !!
Topic: My new observatory
Replies: 14
Views: 258

Re: My new observatory

That’s a beautiful observatory for a good solar friend.
by Starry Jack
Mon Dec 23, 2019 3:43 am
Forum: This is SolarChat !!
Topic: Solar Analemma 2016-2019
Replies: 20
Views: 300

Re: Solar Analemma 2016-2019

Simply poetry
by Starry Jack
Fri Dec 13, 2019 2:04 am
Forum: This is SolarChat !!
Topic: Belated mercury transit image
Replies: 12
Views: 305

Re: Belated mercury transit image

Excellent addition to the topic!
by Starry Jack
Wed Nov 13, 2019 3:11 pm
Forum: This is SolarChat !!
Topic: Mercury Transit
Replies: 11
Views: 278

Re: Mercury Transit

Love the shot, love the story.
by Starry Jack
Tue Nov 12, 2019 12:15 am
Forum: This is SolarChat !!
Topic: Mercury with a dying Quark
Replies: 7
Views: 246

Mercury with a dying Quark

I got Mercury but I had to deal with: -Removing shrubbery -Removing the roof of the observatory -Tying back 50' high tree branches -Morning clouds And worst of all...my Quark died (yes, Valery, I am sending it back). It never reached GREEN and had horrible contrast. That said, I did get some screen ...
by Starry Jack
Tue Nov 12, 2019 12:11 am
Forum: This is SolarChat !!
Topic: Mercury-Solar Transit Mega Thread | Nov 11th 2019
Replies: 16
Views: 406

Re: Mercury-Solar Transit Mega Thread | Nov 11th 2019

Outstanding! Excellent details in all parts of the transit and each feature of the sun.
by Starry Jack
Tue Nov 12, 2019 12:08 am
Forum: This is SolarChat !!
Topic: SUN 11/11/2019
Replies: 11
Views: 300

Re: SUN 11/11/2019

Good catch
by Starry Jack
Tue Nov 12, 2019 12:07 am
Forum: This is SolarChat !!
Topic: transit Mercury several freq
Replies: 15
Views: 390

Re: transit Mercury several freq

Congrats!
by Starry Jack
Mon Nov 11, 2019 7:44 pm
Forum: This is SolarChat !!
Topic: Mercury run around
Replies: 13
Views: 301

Re: Mercury run around

Winner of the English Mercury Marathon Run goes to...Alexandra!

Well done.
by Starry Jack
Sun Nov 10, 2019 2:50 pm
Forum: This is SolarChat !!
Topic: Anybody going to catch the Mercury Transit?
Replies: 22
Views: 875

Re: Anybody going to catch the Mercury Transit?

I will post what I have done tomorrow. I have ropes on tree branches pulling them down, the roof of the observatory off, bushes trimmed,,,all for a few more minutes.
by Starry Jack
Sat Nov 09, 2019 2:47 pm
Forum: This is SolarChat !!
Topic: Mercury Transit 2016
Replies: 11
Views: 580

Re: Mercury Transit 2016

Great share!
by Starry Jack
Sat Nov 09, 2019 2:46 pm
Forum: This is SolarChat !!
Topic: Anybody going to catch the Mercury Transit?
Replies: 22
Views: 875

Re: Anybody going to catch the Mercury Transit?

StarDust,
I don’t know how to pick up a pre transit mercury.

I may have figured a way to pick up another ten minutes on my second time window...if I throw a rope with a grappling hook to a branch 50’ up and can bend it out of the way, I might extend my time.

The things we do!
by Starry Jack
Thu Nov 07, 2019 3:34 pm
Forum: This is SolarChat !!
Topic: Anybody going to catch the Mercury Transit?
Replies: 22
Views: 875

Re: Anybody going to catch the Mercury Transit?

I have to laugh...I have been testing the timing of the event with my landscape...this led me to trimming some 20’ high vegetation on top of a very tall ladder. When I got back down after an hour of work I realized all I did was clear the telescope path to see the blocking palm trees on the neighbor...
by Starry Jack
Wed Nov 06, 2019 3:26 am
Forum: This is SolarChat !!
Topic: Anybody going to catch the Mercury Transit?
Replies: 22
Views: 875

Re: Anybody going to catch the Mercury Transit?

I’m forecasted for sun. I will use 152mm stopped to 95mm and quark.
by Starry Jack
Tue Nov 05, 2019 1:39 am
Forum: This is SolarChat !!
Topic: Anybody going to catch the Mercury Transit?
Replies: 22
Views: 875

Anybody going to catch the Mercury Transit?

I believe I will have a 10 minute and a 5 minute window to catch the transit when the local trees will not be in the way. The five minute window will be as Mercury touches the limb so maybe I will get a prom as well!
by Starry Jack
Tue Nov 05, 2019 1:36 am
Forum: This is SolarChat !!
Topic: How to locate the Dust Bunnies
Replies: 6
Views: 485

Re: How to locate the Dust Bunnies

I can't wait to attack the bunnies! Thanks all for the suggestions. Merlin, thanks for the extended narrative. You've pointed out several experiences I have very similar.
by Starry Jack
Sun Nov 03, 2019 5:31 pm
Forum: This is SolarChat !!
Topic: How to locate the Dust Bunnies
Replies: 6
Views: 485

How to locate the Dust Bunnies

Where are these vicious little creatures? I have cleaned every optical surface I can think of and tried rotating every element in the optical train I can and I can't find the little beasties. D-ERF Objective lens Diagonal Quark 1st surface Quark 2nd surface UV/IR Cut Filter (both sides) Camera 2019-...
by Starry Jack
Fri Nov 01, 2019 3:41 pm
Forum: This is SolarChat !!
Topic: Interference eliminator and tilt adjuster
Replies: 23
Views: 852

Re: Interference eliminator and tilt adjuster

I do believe I have some vignette for sure. I just did not have the funds.

BTW my unit is between the camera and quark not quark and telescope.
by Starry Jack
Fri Nov 01, 2019 1:33 am
Forum: This is SolarChat !!
Topic: Interference eliminator and tilt adjuster
Replies: 23
Views: 852

Re: Interference eliminator and tilt adjuster

Egad. Now I worry I did not do it right! I have the $30 ZWO with thumb screws and got it working in about three minutes. Never touched it since and never have rings.