Search found 24461 matches

by marktownley
Wed Nov 14, 2018 6:06 am
Forum: This is SolarChat !!
Topic: Sun is rare these days ...
Replies: 7
Views: 102

Re: Sun is rare these days ...

I know the feeling!
by marktownley
Tue Nov 13, 2018 6:06 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Another geomagnetic storm 11th Nov 2018
Replies: 9
Views: 199

Re: Another geomagnetic storm 11th Nov 2018

Montana wrote:
Tue Nov 13, 2018 8:03 am
Mark, I am on the Lancaster one and the Calsky one and I haven't had any alerts? mmmm

Alexandra
We'll have our settings different in the app. I'm on 'minor' & 'UK'.
by marktownley
Tue Nov 13, 2018 7:08 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Another geomagnetic storm 11th Nov 2018
Replies: 9
Views: 199

Re: Another geomagnetic storm 11th Nov 2018

On the little graphic of the suns disk it is the bright region at the 2 o'clock position.
by marktownley
Mon Nov 12, 2018 8:48 pm
Forum: This is SolarChat !!
Topic: I told ya so... Comets causing sunspots.
Replies: 7
Views: 171

Re: I told ya so... Comets causing sunspots.

or are the sunspots causing comets? ;) :P
by marktownley
Mon Nov 12, 2018 8:47 pm
Forum: This is SolarChat !!
Topic: Solar panorama in Ca II K 11th Nov.
Replies: 8
Views: 157

Re: Solar panorama in Ca II K 11th Nov.

Nice capture Stu! I sympathise with the tree, i'd arranged with my neighbour that I getting her overgrown conifer cut down and disposed of, however at the last minute she bottled it on me and said no - grrrr! I shall persist.
by marktownley
Mon Nov 12, 2018 8:41 pm
Forum: This is SolarChat !!
Topic: Sol from the 10th of November 2018.
Replies: 11
Views: 151

Re: Sol from the 10th of November 2018.

Lovely prom shots and a nice setup too Eric!
by marktownley
Mon Nov 12, 2018 8:37 pm
Forum: This is SolarChat !!
Topic: Sun November 11th
Replies: 14
Views: 207

Re: Sun November 11th

Top shots Franco!
by marktownley
Mon Nov 12, 2018 8:35 pm
Forum: This is SolarChat !!
Topic: Ha Full Disk 11th November
Replies: 13
Views: 178

Re: Ha Full Disk 11th November

Thanks Alexandra!
by marktownley
Mon Nov 12, 2018 7:03 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Another geomagnetic storm 11th Nov 2018
Replies: 9
Views: 199

Re: Another geomagnetic storm 11th Nov 2018

I'm on the lancaster one on my phone (aurora watch UK)
by marktownley
Mon Nov 12, 2018 10:01 am
Forum: This is SolarChat !!
Topic: Ha Full Disk 11th November
Replies: 13
Views: 178

Re: Ha Full Disk 11th November

It is a pair of external Lunt 50 etalons - a ls50c and a ls50fha.
by marktownley
Mon Nov 12, 2018 7:27 am
Forum: This is SolarChat !!
Topic: Ha Full Disk 11th November
Replies: 13
Views: 178

Re: Ha Full Disk 11th November

Thanks everyone! I did a prom shot too. They looked great visually in single stack.

Imageproms by Mark Townley, on Flickr
by marktownley
Sun Nov 11, 2018 5:39 pm
Forum: This is SolarChat !!
Topic: Ha Full Disk 11th November
Replies: 13
Views: 178

Ha Full Disk 11th November

Hi All, There were some cloud breaks later in Sunday afternoon, and I was able to observe the sun through an open door way as it made it's way towards the horizon. It has been a while since i've got any solar in and it was nice to stand and observe visually for a while before snapping a quick full d...
by marktownley
Sun Nov 11, 2018 11:36 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Another geomagnetic storm 11th Nov 2018
Replies: 9
Views: 199

Re: Another geomagnetic storm 11th Nov 2018

Good record Stu, i'd a couple of alerts come through on my phone these past couple of days too. Your graphic also includes the cycle 25 sunspot that briefly appeared.
by marktownley
Sun Nov 11, 2018 11:36 am
Forum: SPoD Archive
Topic: Another geomagnetic storm 11th Nov 2018
Replies: 1
Views: 59

Re: Another geomagnetic storm 11th Nov 2018

Good record Stu, i'd a couple of alerts come through on my phone these past couple of days too. Your graphic also includes the cycle 25 sunspot that briefly appeared.
by marktownley
Sun Nov 11, 2018 8:34 am
Forum: This is SolarChat !!
Topic: High latitude sunspot
Replies: 17
Views: 378

Re: High latitude sunspot

I think once we get into spring we will start seeing the return of the spots in the northern hemisphere again. Cycle 24 the northern hemisphere peaked a good year and half before the southern hemisphere peaked, so, would be reasonable to assume this asymmetry in the start of 25, and seeing spots in ...
by marktownley
Sun Nov 11, 2018 6:54 am
Forum: This is SolarChat !!
Topic: High latitude sunspot
Replies: 17
Views: 378

Re: High latitude sunspot

It's definitely a cycle 25 spot. Take a look at the graph from Belgium, it's starting to uptick quite quickly once we get into the new year.
wolfjmms.png
wolfjmms.png (139.05 KiB) Viewed 238 times
by marktownley
Sun Nov 11, 2018 6:50 am
Forum: This is SolarChat !!
Topic: New Sunspot (Undesignated ATM), Big Proms, Full Disc | HA | Nov 9th 2018
Replies: 4
Views: 141

Re: New Sunspot (Undesignated ATM), Big Proms, Full Disc | HA | Nov 9th 2018

Super shots Marty! The spot is reversed polarity (compared to cycle 24 spots) so is part of cycle 25.
by marktownley
Sun Nov 11, 2018 6:48 am
Forum: This is SolarChat !!
Topic: Today's Faint Proms | HA | Nov 7th 2018
Replies: 6
Views: 133

Re: Today's Faint Proms | HA | Nov 7th 2018

Good job there Marty!
by marktownley
Wed Nov 07, 2018 8:59 pm
Forum: Solar Scope Modifications
Topic: Pst Cak filter secret -
Replies: 24
Views: 791

Re: Pst Cak filter secret -

I think used in conjunction with another filter with a similar steep profile just below 400nm could work as a basic CaK filter.
by marktownley
Wed Nov 07, 2018 6:57 am
Forum: This is SolarChat !!
Topic: 20181106&20181107 Peaceful Surface
Replies: 6
Views: 158

Re: 20181106&20181107 Peaceful Surface

A quiet sun but nice disks!
by marktownley
Tue Nov 06, 2018 6:23 pm
Forum: This is SolarChat !!
Topic: Mg II in UltraViolet
Replies: 43
Views: 1082

Re: Mg II in UltraViolet

'Off the Shelf' UV achromats aren't ideal, but could form a starting point for such a scope. You could make a tiny full disk instrument; the 50/200 https://www.edmundoptics.eu/f/near-uv-nuv-achromatic-lenses/13900/ could replace the objective in a finder scope, and then mount the filters on the nose...
by marktownley
Tue Nov 06, 2018 5:54 am
Forum: Solar Scope Modifications
Topic: Pst Cak filter secret -
Replies: 24
Views: 791

Re: Pst Cak filter secret -

Could be an interesting one ;)
by marktownley
Mon Nov 05, 2018 8:18 pm
Forum: This is SolarChat !!
Topic: November 4th Session
Replies: 14
Views: 275

Re: November 4th Session

A really nice run of images Brian!
by marktownley
Mon Nov 05, 2018 8:13 pm
Forum: This is SolarChat !!
Topic: Sun today 110418
Replies: 16
Views: 320

Re: Sun today 110418

Those are lovely shots Franco!