The Charlie Bates Solar Astronomy Project is proudly sponsored by the following fine companies:
ImageImageImageImage
Image
Image
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 4897 matches

by eroel
Fri Jan 24, 2020 10:32 pm
Forum: This is SolarChat !!
Topic: FullDisc 24 January 2020
Replies: 3
Views: 20

Re: FullDisc 24 January 2020

Rainer:
Very good DS´s and presentation.
Fuerte abrazo,
Eric.
by eroel
Fri Jan 24, 2020 4:28 pm
Forum: This is SolarChat !!
Topic: 22.01.20202 Prom in very poor seeing.
Replies: 17
Views: 129

Re: 22.01.20202 Prom in very poor seeing.

Hi: Really enjoyed your comments, photos and blog, I felt young again to see those homemade refractors, self designed and made mounts, the way we made our observatories and the way we setup our scopes. Reminded me when I made a fiberglass dome for my observatory, when I used to make my optics and de...
by eroel
Fri Jan 24, 2020 3:12 pm
Forum: This is SolarChat !!
Topic: Sol from the 21st and 22nd of January 2020.
Replies: 10
Views: 91

Re: Sol from the 21st and 22nd of January 2020.

Alexandra and guys, much appreciated feedback.
Thank you and wish you all a happy and sunny weekend.
Eric.
by eroel
Thu Jan 23, 2020 7:32 pm
Forum: This is SolarChat !!
Topic: Sol from the 21st and 22nd of January 2020.
Replies: 10
Views: 91

Re: Sol from the 21st and 22nd of January 2020.

Hi:
Excuse the repetitions.
Eric.
by eroel
Thu Jan 23, 2020 7:27 pm
Forum: This is SolarChat !!
Topic: Sol from the 21st and 22nd of January 2020.
Replies: 10
Views: 91

Sol from the 21st and 22nd of January 2020.

Hi: Excuse me for mixing 2 day imaging but it is nice to see the difference in solar activity. Thanks for looking and wish you all a happy and sunny weekend. Eric. Sol del 21 de enero 2020-Meade-CaK-PSTmod-1pos.jpg Sol del 21 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg Sol del 21 de enero 2020-Meade...
by eroel
Thu Jan 23, 2020 7:19 pm
Forum: This is SolarChat !!
Topic: Kanzelhoehe Solar Observatory
Replies: 8
Views: 164

Re: Kanzelhoehe Solar Observatory

Mark:
Impressive observatory.
Thanks,
Eric.
by eroel
Thu Jan 23, 2020 7:14 pm
Forum: This is SolarChat !!
Topic: 19Jan20 - First Light C11+ARIES D-ERF+Quark (Animated GIF Added)
Replies: 24
Views: 350

Re: 19Jan20 - First Light C11+ARIES D-ERF+Quark (Animated GIF Added)

Alfred:
Good imaging and experimentation.
Best regards,
Eric.
by eroel
Thu Jan 23, 2020 7:08 pm
Forum: This is SolarChat !!
Topic: 22.01.20202 Prom in very poor seeing.
Replies: 17
Views: 129

Re: 22.01.20202 Prom in very poor seeing.

Hi:
Nice image and super setup.
Tell us about it.
Eric.
by eroel
Thu Jan 23, 2020 7:04 pm
Forum: This is SolarChat !!
Topic: Full Disc 21 January 2020
Replies: 12
Views: 98

Re: Full Disc 21 January 2020

Rainer:
Beautiful FD mosaics.
Fuerte abrazo,
Eric.
by eroel
Thu Jan 23, 2020 7:01 pm
Forum: This is SolarChat !!
Topic: Solar offerings from Jan. 21, 2020
Replies: 11
Views: 112

Re: Solar offerings from Jan. 21, 2020

Phil:
Beautiful session,
Wish you et al a nice weekend.
Eric.
by eroel
Mon Jan 20, 2020 7:11 pm
Forum: This is SolarChat !!
Topic: Solar Imaging Tutorial, Focus, Flat Calibration, Exposure | Jan 20th 2020
Replies: 7
Views: 113

Re: Solar Imaging Tutorial, Focus, Flat Calibration, Exposure | Jan 20th 2020

Marty:
Thanks for sharing your workflow through the tutorials that you are loading up.
Best regards,
Eric.
by eroel
Mon Jan 20, 2020 4:17 pm
Forum: This is SolarChat !!
Topic: Sol from the 18th of January 2020.
Replies: 7
Views: 90

Re: Sol from the 18th of January 2020.

Alexandra, Jochen, Mark, Maurits and Salvo: Thanks for the feedback. Mark, still raining and cold, so no Sun yesterday and today. Aside of that, we are having an earthquake drill at 11:00 am in the whole Mexican Republic, so we have to get out the buildings and homes, so to get to safe areas. Well t...
by eroel
Sun Jan 19, 2020 8:52 pm
Forum: This is SolarChat !!
Topic: Full Disc 17 January 2020
Replies: 11
Views: 128

Re: Full Disc 17 January 2020

Rainer:
Muy bueno (Very good)
Fuerte abrazo (A big hug)
Eric.
by eroel
Sun Jan 19, 2020 7:47 pm
Forum: This is SolarChat !!
Topic: Sol from the 18th of January 2020.
Replies: 7
Views: 90

Sol from the 18th of January 2020.

Hi: Well, down at my place it has been raining and cloudy, though I could get some shots on the 18th. Thanks for looking. Wish you all have a nice starting week. Eric. Sol del 18 de enero 2020-Meade-CaK-PSTmod-3pos.jpg Sol del 18 de enero 2020-Meade-CaK-PSTmod-3neg-pos.jpg Sol del 18 de enero 2020-M...
by eroel
Sun Jan 19, 2020 7:39 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20200119) | TV101, LUNT60, LUNT60 Ca-K
Replies: 13
Views: 233

Re: Today's SUN (20200119) | TV101, LUNT60, LUNT60 Ca-K

Pedro:
Bautiful work and presentation.
Fuertote abrazo,
Eric.
by eroel
Sun Jan 19, 2020 7:36 pm
Forum: This is SolarChat !!
Topic: January 17th Session
Replies: 15
Views: 148

Re: January 17th Session

Brian:
Thanks for sharing your work.
I could never stand those temperatures :shock:
Best regards,
Eric.
by eroel
Sun Jan 19, 2020 7:34 pm
Forum: This is SolarChat !!
Topic: Sun and sea
Replies: 14
Views: 173

Re: Sun and sea

Alexandra:
Thanks, I also miss Derek´s images.
Best regards,
Eric.
by eroel
Sun Jan 19, 2020 7:29 pm
Forum: This is SolarChat !!
Topic: Ha Full Disk & S6348 - 19th January
Replies: 15
Views: 125

Re: Ha Full Disk & S6348 - 19th January

Mark:
Beautiful images, clean and crisp, down at my place it is raining. :(
Best wishes.
Eric.
by eroel
Thu Jan 16, 2020 5:29 pm
Forum: This is SolarChat !!
Topic: Full/Partial disk 2020-01-16
Replies: 8
Views: 124

Re: Full/Partial disk 2020-01-16

Jochen: Well as you say, the important thing is to be happy when we can get some Sun, so to keep our imaging and processing experimentation on. I live in one of the biggest populated cities, so contamination, eruptions by a near by volcano, earthquakes, (geological and man made quakes made by cars a...
by eroel
Thu Jan 16, 2020 12:35 pm
Forum: This is SolarChat !!
Topic: Sol from the 15th of January 2020.
Replies: 11
Views: 154

Re: Sol from the 15th of January 2020.

Alexandra and guys, thanks for looking and commenting.
Alexandra, yes I also remember Apollo talking about some diagonal line features. like the 3 or more diagonal parallel lines of small white spots on the left next to the big ecuatorial active zone.
Good day,
Eric.
by eroel
Thu Jan 16, 2020 4:34 am
Forum: This is SolarChat !!
Topic: Sol from the 15th of January 2020.
Replies: 11
Views: 154

Sol from the 15th of January 2020.

Hi: A set of CaK and Ha FD´s taken with the 102mm f/9 Meade with a CaK PSTmod, and the Solarmax 90-DS. Thanks for looking. Eric. Sol del 15 de enero 2020-Meade-CaK-PSTmod-2pos.jpg Sol del 15 de enero 2020-Meade-CaK-PSTmod-1pos-neg.jpg Sol del 15 de enero 2020-Meade-CaK-PSTmod-1neg-pos.jpg Sol del 15...
by eroel
Thu Jan 16, 2020 4:29 am
Forum: This is SolarChat !!
Topic: Sol from the 14th of January 2020.
Replies: 3
Views: 70

Sol from the 14th of January 2020.

Hi: Some shots from the 14th, taken with the 3 scopes at the home observatory. Thanks for looking. Eric. Sol del 14 de enero 2020-Meade-CaK-PSTmod-2pos.jpg Sol del 14 de enero 2020-Meade-CaK-PSTmod-2neg-pos.jpg Sol del 14 de enero 2020-Meade-CaK-PSTmod-2pos-neg.jpg Sol del 14 de enero 2020-Solarmax ...
by eroel
Wed Jan 15, 2020 10:44 pm
Forum: This is SolarChat !!
Topic: Full Disk and prominence 15/01/2020
Replies: 12
Views: 169

Re: Full Disk and prominence 15/01/2020

Salvo:
Very nice shots.
Regards,
Eric.
by eroel
Wed Jan 15, 2020 10:42 pm
Forum: This is SolarChat !!
Topic: Full Disc 15 January 2020
Replies: 10
Views: 124

Re: Full Disc 15 January 2020

Rainer:
Nice result in spite of conditions, at home I had about the same problem (thin high clouds).
Fuerte abrazo,
Eric.
by eroel
Tue Jan 14, 2020 4:06 pm
Forum: This is SolarChat !!
Topic: Visual Solar Observing
Replies: 17
Views: 298

Re: Visual Solar Observing

James: As an old timer, I started in the early fifties just doing visual astronomy, at that time it was hard to get some photos because you needed a box camera with a film plate, know how to develop the film and how to process it, then came 35mm film in many versions and 35mm cameras that made thing...