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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 1160 matches

by xn44
Sun Sep 01, 2019 10:13 am
Forum: This is SolarChat !!
Topic: New pore 2019 09 01 (AR12748)
Replies: 1
Views: 305

New pore 2019 09 01 (AR12748)

Hello all, we have a new pore! :hamster: S/C 14" Filter baader 3,8 Solar continuum ASI 174 mm Autostackker Imppg Photoshop https://live.staticflickr.com/65535/48657644323_25109fb47f_o.jpg Nuevo Poro 1 9 2019 7 33 A COLOR by Pepe Manteca , en Flickr https://live.staticflickr.com/65535/48657634723_cbe...
by xn44
Sun Sep 01, 2019 10:06 am
Forum: This is SolarChat !!
Topic: Today's SUN (20190829) | SM comparison images
Replies: 10
Views: 668

Re: Today's SUN (20190829) | SM comparison images

it's always the same...SPECTACULAR, Pedro!
by xn44
Sun Sep 01, 2019 10:03 am
Forum: This is SolarChat !!
Topic: August 24th Ha Set
Replies: 9
Views: 564

Re: August 24th Ha Set

It's really spectacular, Brian!
by xn44
Sun Sep 01, 2019 10:02 am
Forum: This is SolarChat !!
Topic: FD 31-08
Replies: 8
Views: 544

Re: FD 31-08

Good image Maurits!
by xn44
Sun Sep 01, 2019 10:01 am
Forum: This is SolarChat !!
Topic: animations 22-29-30 august
Replies: 7
Views: 491

Re: animations 22-29-30 august

It's really nice!!!!
Congratulations!
by xn44
Thu Aug 29, 2019 6:39 am
Forum: This is SolarChat !!
Topic: Continuum under 450nm with good seeing
Replies: 14
Views: 873

Re: Continuum under 450nm with good seeing

Awesome images!
by xn44
Wed Aug 28, 2019 8:03 am
Forum: This is SolarChat !!
Topic: Prom Animation 25th August '19_Colour Added
Replies: 27
Views: 1203

Re: Prom Animation 25th August '19_Colour Added

Great Video! Congratulations! :bow
by xn44
Wed Aug 28, 2019 8:03 am
Forum: SPoD Archive
Topic: Prom Animation 25th August '19_Colour Added
Replies: 22
Views: 1003

Re: Prom Animation 25th August '19_Colour Added

Great Video! Congratulations! :bow
by xn44
Mon Aug 26, 2019 5:21 pm
Forum: This is SolarChat !!
Topic: Happy birthday Alexandra Hart
Replies: 15
Views: 676

Re: Happy birthday Alexandra Hart

🍾🍾🍾happy birthday!🎂🎂🎂
by xn44
Sat Aug 24, 2019 8:43 am
Forum: This is SolarChat !!
Topic: Prom 08-23
Replies: 14
Views: 657

Re: Prom 08-23

Super super image, Maurits!
by xn44
Sat Aug 24, 2019 8:42 am
Forum: This is SolarChat !!
Topic: August 22nd Session
Replies: 8
Views: 561

Re: August 22nd Session

I like your images!
by xn44
Sat Aug 24, 2019 8:39 am
Forum: This is SolarChat !!
Topic: Granulation with a T300 und EO 430nm
Replies: 6
Views: 465

Re: Granulation with a T300 und EO 430nm

excellent image! 👌
by xn44
Sat Aug 24, 2019 8:32 am
Forum: This is SolarChat !!
Topic: Descending Prominence Knots and Coronal Rain - 23rd August
Replies: 20
Views: 859

Re: Descending Prominence Knots and Coronal Rain - 23rd August

I love your explanations thank you! :bow
super video!
by xn44
Wed Aug 21, 2019 3:56 pm
Forum: This is SolarChat !!
Topic: Prom 2019 08 21
Replies: 8
Views: 503

Re: Prom 2019 08 21

Thanks Langleif2, Mark! ....... There are no pores ahoy! :|
by xn44
Wed Aug 21, 2019 2:52 pm
Forum: This is SolarChat !!
Topic: Prom 2019 08 21
Replies: 8
Views: 503

Prom 2019 08 21

Hello all, Today only Proms: https://live.staticflickr.com/65535/48592678462_9b20f6aa7b_o.jpg Protuberancia 21 8 2019 10 04 B by Pepe Manteca , en Flickr https://live.staticflickr.com/65535/48592537601_2a116b9d6e_o.jpg Protuberancia 21 8 2019 10 04 by Pepe Manteca , en Flickr https://live.staticflic...
by xn44
Mon Aug 19, 2019 10:56 am
Forum: This is SolarChat !!
Topic: Saturday Solar 17th August - Celestron Omni CaK testing
Replies: 10
Views: 549

Re: Saturday Solar 17th August - Celestron Omni CaK testing

Good images Alexandra! I want good weather ! :P
by xn44
Sun Aug 18, 2019 10:13 am
Forum: This is SolarChat !!
Topic: Solar FDs in 540 nm Continuum and CaK
Replies: 12
Views: 669

Re: Solar FDs in 540 nm Continuum and CaK

Good work, maurits!
by xn44
Sun Aug 18, 2019 10:12 am
Forum: This is SolarChat !!
Topic: SUN & MOON (20190815)
Replies: 8
Views: 535

Re: SUN & MOON (20190815)

Buff very good images, Pedro!
by xn44
Sun Aug 18, 2019 10:09 am
Forum: This is SolarChat !!
Topic: Saturday Sun, Polar Faculae and Bright Points - 17th August
Replies: 14
Views: 681

Re: Saturday Sun, Polar Faculae and Bright Points - 17th August

Thanks, your explanations help a lot to understand the reality of our star.
by xn44
Sun Aug 18, 2019 9:57 am
Forum: This is SolarChat !!
Topic: T300 with an Edmund Optics 394nm
Replies: 9
Views: 544

Re: T300 with an Edmund Optics 394nm

EXCELLENT!
by xn44
Sat Aug 17, 2019 5:51 pm
Forum: This is SolarChat !!
Topic: August 15th - Ha
Replies: 17
Views: 730

Re: August 15th - Ha

Good images :band
by xn44
Sat Aug 17, 2019 1:59 pm
Forum: This is SolarChat !!
Topic: Sun 2019 08 17
Replies: 7
Views: 481

Sun 2019 08 17

Hello all, Last images. S/C 14" ASI 174MM solar Continuum thanks https://live.staticflickr.com/65535/48558274976_2f2e972ccd_o.jpg Granulacion 17 8 2019 solar continuum by Pepe Manteca , en Flickr https://live.staticflickr.com/65535/48557611652_93cf647cbc_o.jpg Faculas 17 8 2019 8 37 tu color by Pepe...