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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.

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

Search found 1283 matches

by MAURITS
Tue Jan 14, 2020 11:20 am
Forum: This is SolarChat !!
Topic: Full Disc 13 January 2020
Replies: 9
Views: 143

Re: Full Disc 13 January 2020

Very nice images Rainer.
by MAURITS
Tue Jan 14, 2020 11:18 am
Forum: This is SolarChat !!
Topic: Sol from the 13th of January 2020.
Replies: 8
Views: 115

Re: Sol from the 13th of January 2020.

Lovely images Eric.
by MAURITS
Tue Jan 14, 2020 10:42 am
Forum: This is SolarChat !!
Topic: Jan 13, 2020 FDs +
Replies: 15
Views: 202

Re: Jan 13, 2020 FDs +

Lovely images Phil.
by MAURITS
Mon Jan 13, 2020 5:23 pm
Forum: This is SolarChat !!
Topic: Lucky me ...
Replies: 8
Views: 229

Lucky me ...

I have some neighbors with a business in an industrial zone. This of course is always accompanied by light pollution, but in a minimum extent. When I watch in the evening some nebulae , I always have the correct filters for this kind of observation, regardless the light pollution. So this weekend a ...
by MAURITS
Mon Jan 13, 2020 6:18 am
Forum: This is SolarChat !!
Topic: Sol from the 11th of January 2020.
Replies: 8
Views: 124

Re: Sol from the 11th of January 2020.

Very nice images Eric.
by MAURITS
Sun Jan 12, 2020 9:04 pm
Forum: This is SolarChat !!
Topic: CaK disc and ARs of January 12
Replies: 12
Views: 175

Re: CaK disc and ARs of January 12

Very nice images Raf
by MAURITS
Sun Jan 12, 2020 7:19 am
Forum: This is SolarChat !!
Topic: Penumbral Eclipse of the MOON (20200110)
Replies: 20
Views: 321

Re: Penumbral Eclipse of the MOON (20200110)

Great shots Pedro.
by MAURITS
Sun Jan 12, 2020 7:17 am
Forum: This is SolarChat !!
Topic: Full Disc 11 January 2020
Replies: 14
Views: 468

Re: Full Disc 11 January 2020

Very nice to see Rainer, lovely to see the Wl.
by MAURITS
Sat Jan 11, 2020 4:18 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20200111) | TV101 & LUNT60
Replies: 14
Views: 398

Re: Today's SUN (20100111) | TV101 & LUNT60

Very nice session Pedro.
by MAURITS
Sat Jan 11, 2020 6:53 am
Forum: This is SolarChat !!
Topic: Sol from the 10th of January 2020.
Replies: 7
Views: 114

Re: Sol from the 10th of January 2020.

Great Eric, here clouds, clouds and rain ...
by MAURITS
Sat Jan 11, 2020 6:51 am
Forum: This is SolarChat !!
Topic: Sol from the 9th of January 2020.
Replies: 10
Views: 144

Re: Sol from the 9th of January 2020.

Fantastic session Eric.
by MAURITS
Fri Jan 10, 2020 6:42 pm
Forum: This is SolarChat !!
Topic: Full Disk CaK/H-alpha 20200109
Replies: 12
Views: 227

Re: Full Disk CaK/H-alpha 20200109

Very nice Salvo.
by MAURITS
Fri Jan 10, 2020 6:33 pm
Forum: This is SolarChat !!
Topic: Full Disc 09 January 2020
Replies: 10
Views: 136

Re: Full Disc 09 January 2020

Well done Rainer.
by MAURITS
Thu Jan 09, 2020 6:12 am
Forum: This is SolarChat !!
Topic: Full Disc 08 January 2020
Replies: 24
Views: 307

Re: Full Disc 08 January 2020

Lovely images Rainer.
by MAURITS
Thu Jan 09, 2020 6:11 am
Forum: This is SolarChat !!
Topic: Jan. 7 and 8, 2020 LS80
Replies: 12
Views: 192

Re: Jan. 7 and 8, 2020 LS80

Excellent images Phil.
by MAURITS
Wed Jan 08, 2020 8:37 pm
Forum: This is SolarChat !!
Topic: Full disk (HA) 2020-01-06
Replies: 10
Views: 199

Re: Full disk (HA) 2020-01-06

Realy nice Jochen.
by MAURITS
Tue Jan 07, 2020 9:06 am
Forum: This is SolarChat !!
Topic: Full disk (HA) 2020-01-06
Replies: 10
Views: 199

Re: Full disk (HA) 2020-01-06

Well done.
by MAURITS
Tue Jan 07, 2020 9:05 am
Forum: This is SolarChat !!
Topic: AR2755 2020/1/5
Replies: 12
Views: 187

Re: AR2755 2020/1/5

Excellent Olivier.
by MAURITS
Tue Jan 07, 2020 9:04 am
Forum: This is SolarChat !!
Topic: Full Disc 06 January 2020
Replies: 8
Views: 120

Re: Full Disc 06 January 2020

Well done Rainer.
by MAURITS
Tue Jan 07, 2020 9:03 am
Forum: This is SolarChat !!
Topic: AR2755 in High Res | Jan 6th 2020
Replies: 15
Views: 182

Re: AR2755 in High Res | Jan 6th 2020

Great images Marty.
by MAURITS
Tue Jan 07, 2020 9:02 am
Forum: This is SolarChat !!
Topic: Jan 5th in Ha
Replies: 13
Views: 182

Re: Jan 5th in Ha

Niceley done Brian.
by MAURITS
Tue Jan 07, 2020 8:59 am
Forum: This is SolarChat !!
Topic: Jan 6, 2020 LS80
Replies: 10
Views: 143

Re: Jan 6, 2020 LS80

Super images Phil.
by MAURITS
Tue Jan 07, 2020 8:59 am
Forum: This is SolarChat !!
Topic: Sol from the 6th of January 2020.
Replies: 4
Views: 88

Re: Sol from the 6th of January 2020.

Beautiful images Eric.