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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 332 matches

by marios i.
Mon Feb 11, 2019 4:23 pm
Forum: This is SolarChat !!
Topic: FD - Ha on 9/2/19
Replies: 12
Views: 783

Re: FD - Ha on 9/2/19

Hello Alexandra (it takes about one hour +- ), David, Stu, Marty, Maurits, and thank you for great feedback.

All the Best
Marios
by marios i.
Sun Feb 10, 2019 12:38 pm
Forum: This is SolarChat !!
Topic: FD - Ha on 9/2/19
Replies: 12
Views: 783

Re: FD - Ha on 9/2/19

Thank you Mark!
by marios i.
Sun Feb 10, 2019 5:37 am
Forum: This is SolarChat !!
Topic: FD - Ha on 9/2/19
Replies: 12
Views: 783

Re: FD - Ha on 9/2/19

Hello Franco,Brian, Eric,and thank you so much for the friendly comments!

Marios
by marios i.
Sat Feb 09, 2019 11:12 am
Forum: This is SolarChat !!
Topic: FD - Ha on 9/2/19
Replies: 12
Views: 783

FD - Ha on 9/2/19

Kaleimera,
Beautiful prominences today at 09:00 o'clock in the morning.

Coronado 40mmDS PST at 44X

Thanks for looking
Mario's
9 2 19 Ha .jpg
9 2 19 Ha .jpg (4.75 MiB) Viewed 783 times
by marios i.
Tue Feb 05, 2019 2:17 pm
Forum: This is SolarChat !!
Topic: Full Disk 2/2/19
Replies: 8
Views: 694

Re: Full Disk 2/2/19

krakatoa1883 wrote:
Tue Feb 05, 2019 11:45 am
Wonderful sketch, very nice !
Thank you so much!
Marios
by marios i.
Tue Feb 05, 2019 11:16 am
Forum: This is SolarChat !!
Topic: Full Disk 2/2/19
Replies: 8
Views: 694

Re: Full Disk 2/2/19

Thank you all for the nice feedback!!!

Marios
by marios i.
Sun Feb 03, 2019 1:11 pm
Forum: This is SolarChat !!
Topic: Full Disk 2/2/19
Replies: 8
Views: 694

Full Disk 2/2/19

Hello to all,
The Sun on 2/2/19 Saturday through 40mmDS PST at 44X after long time.

Thanks for looking
Mario's
Saturday 2 2 19.jpg
Saturday 2 2 19.jpg (2.08 MiB) Viewed 694 times
by marios i.
Wed Aug 01, 2018 3:47 am
Forum: This is SolarChat !!
Topic: CBSAP shutting down September 1st
Replies: 26
Views: 3195

Re: CBSAP shutting down September 1st

All the best Stephen.

Marios
by marios i.
Wed Jul 25, 2018 8:03 pm
Forum: This is SolarChat !!
Topic: Sol 24-7-2018 Ha
Replies: 7
Views: 709

Re: Sol 24-7-2018 Ha

Very nice images.

Marios
by marios i.
Wed Jul 25, 2018 7:59 pm
Forum: This is SolarChat !!
Topic: Ha Full Disk 25th July
Replies: 8
Views: 746

Re: Ha Full Disk 25th July

Lovley!

Marios
by marios i.
Tue Jul 24, 2018 3:38 pm
Forum: This is SolarChat !!
Topic: July 24th
Replies: 13
Views: 1188

Re: July 24th

Wonderful results Robert!

Marios
by marios i.
Tue Jul 24, 2018 3:34 pm
Forum: This is SolarChat !!
Topic: Sol 23-7-2018 Ha
Replies: 5
Views: 572

Re: Sol 23-7-2018 Ha

Beautiful work!!!

My pleasure to view
Marios
by marios i.
Tue Jul 24, 2018 2:53 am
Forum: This is SolarChat !!
Topic: Full Disc 21/7/18
Replies: 6
Views: 759

Re: Full Disc 21/7/18

Thank you Steve.

Marios
by marios i.
Tue Jul 24, 2018 2:51 am
Forum: This is SolarChat !!
Topic: H-Alfa 2018-07-21
Replies: 9
Views: 882

Re: H-Alfa 2018-07-21

Lovley!

Marios
by marios i.
Mon Jul 23, 2018 3:14 pm
Forum: This is SolarChat !!
Topic: Slim pickings 20/7/18
Replies: 11
Views: 1052

Re: Slim pickings 20/7/18

Wonderful result!

Marios
by marios i.
Mon Jul 23, 2018 3:06 pm
Forum: This is SolarChat !!
Topic: Sol from the 22nd of July 2018.
Replies: 10
Views: 879

Re: Sol from the 22nd of July 2018.

Very nice set of images Eric!

Marios
by marios i.
Mon Jul 23, 2018 3:04 pm
Forum: This is SolarChat !!
Topic: Full Disc 21/7/18
Replies: 6
Views: 759

Re: Full Disc 21/7/18

Thank you all!!

Marios
by marios i.
Mon Jul 23, 2018 3:01 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20180721) | HR WL TEC140
Replies: 16
Views: 1348

Re: Today's SUN (20180721) | HR WL TEC140

Wonderful set of images and the video

Marios
by marios i.
Mon Jul 23, 2018 3:00 pm
Forum: This is SolarChat !!
Topic: Sol 22-7-2018 ha
Replies: 9
Views: 808

Re: Sol 22-7-2018 ha

Beautiful result!

Marios
by marios i.
Mon Jul 23, 2018 2:58 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20180722) | FD images 3 scopes
Replies: 9
Views: 934

Re: Today's SUN (20180722) | FD images 3 scopes

Beautiful set of images and very nice equipment Pedro .

Marios
by marios i.
Mon Jul 23, 2018 2:53 pm
Forum: This is SolarChat !!
Topic: July 21st Session
Replies: 17
Views: 1300

Re: July 21st Session

Beautiful,Beautiful images Brian.

Marios
by marios i.
Mon Jul 23, 2018 2:49 pm
Forum: This is SolarChat !!
Topic: Ha Full Disk 23rd July
Replies: 7
Views: 684

Re: Ha Full Disk 23rd July

Excellent work Mark.

Marios
by marios i.
Sat Jul 21, 2018 1:37 pm
Forum: This is SolarChat !!
Topic: Full Disc 21/7/18
Replies: 6
Views: 759

Full Disc 21/7/18

Sun this morning 21/7/18. 40mm PST at 44X.

Thanks for looking
Marios
Saturday 21 7 18  ha.jpg
Saturday 21 7 18 ha.jpg (3.13 MiB) Viewed 752 times