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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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Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

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MalVeauX
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Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by MalVeauX » Wed Sep 11, 2019 4:25 pm

Hey all,

Had a clear sky this morning and playing around with some new configurations. With some help from members of the forum in the mod board I have tinkered up a little different PST mod that involves a straight through configuration using the stock blocking filter. Anyhow, it works as a standard PST but without the black box, and as a typical PST mod that inserts into another scope, such as my C8 Edge. Tested everything today with an ASI290MM.

B&W:

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Colored:

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C8 Edge + Aires Full Aperture D-ERF
HA: PST etalon + stock 5mm blocking filter in straight-through mod + ASI290MM
WL: Baader 610nm Filter + 2x Barlow + ASI174MM
PST 40mm + straight through mod + ASI290MM (mosaic x 2 panel)
SolarSetup_09112019.jpg
SolarSetup_09112019.jpg (89.13 KiB) Viewed 474 times
Very best,

LTHB
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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by LTHB » Wed Sep 11, 2019 5:11 pm

Very nice high res, Marty! Please keep posting - helps Northerners like me over the cloudy and grey months!

Regards,

Frank

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MAURITS
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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by MAURITS » Wed Sep 11, 2019 5:12 pm

Beautiful images Marty.
Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be

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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by marktownley » Thu Sep 12, 2019 5:20 am

Great images Marty! Glad the sun has returned for you.
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Carbon60
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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by Carbon60 » Thu Sep 12, 2019 9:09 am

Good set of images, Marty. Your experiments with the design have worked out nicely.

Stu.
Lunt LS60THa B1200 PTFT
150mm H-alpha Solar telescope with Lunt35 mod
DMK41, Basler acA1920-155
NEQ6 Pro-mount
Fluxgate Magnetometers (1s and 150s Cadence)
More images at http://www.flickr.com/photos/solarcarbon60/


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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by MapleRidge » Sat Sep 14, 2019 1:19 am

Great set of images Marty :bow

Brian
Brian Colville

Maple Ridge Observatory

Cambray, ON Canada

Photos: https://www.flickr.com/photos/185395281@N08/albums

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Re: Convection Cells, Chromosphere Network, Full Disc | HighRes | Sept 11th 2019

Post by Montana » Mon Sep 16, 2019 11:35 am

A lovely set of images Marty :bow

Alexandra

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