Search found 259 matches

by Alun_H
Tue Oct 04, 2022 2:07 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Lhires III SHG set up + images from 2nd Oct 22
Replies: 3
Views: 44

Re: Lhires III SHG set up + images from 2nd Oct 22

Thank you Alexandra,I will cut back on contrast next time :) Douglas,the guide camera view does make life that much simpler when focusing and I am now thinking I will incorporate one in the SHG I am planning to build which I am basing on the Solex design,I have an Alpy 600 from which I can use the g...
by Alun_H
Mon Oct 03, 2022 10:15 am
Forum: This is SolarChat !!
Topic: Sunday Sun October 2nd 2022
Replies: 12
Views: 101

Re: Sunday Sun October 2nd 2022

Fantastic set of images Stu.

Alun
by Alun_H
Mon Oct 03, 2022 10:12 am
Forum: This is SolarChat !!
Topic: AR 3112 - October 3rd
Replies: 11
Views: 110

Re: AR 3112 - October 3rd

Superb images Richard.

Alun
by Alun_H
Mon Oct 03, 2022 10:11 am
Forum: This is SolarChat !!
Topic: Sunday 2nd October 2022
Replies: 18
Views: 176

Re: Sunday 2nd October 2022

Superb images and sketches Alexandra :bow

Alun
by Alun_H
Mon Oct 03, 2022 10:05 am
Forum: This is SolarChat !!
Topic: Today's SUN (20221002) | AR 13112
Replies: 8
Views: 129

Re: Today's SUN (20221021) | AR 13112

Fantastic images Pedro.

Alun
by Alun_H
Sun Oct 02, 2022 10:01 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Lhires III SHG set up + images from 2nd Oct 22
Replies: 3
Views: 44

Lhires III SHG set up + images from 2nd Oct 22

Here are a few photos showing my Lhires III (Littrow High Resolution) spectrograph attached to the Evostar 72ED apo doublet. Hoya ND16 filter sits on the front of the scope and behind this is a cardboard disk with a 40mm hole so as to bring the scope to f/10 matching the Lhires. One benefit of this ...
by Alun_H
Sun Oct 02, 2022 9:46 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: CaK spectroheliogram 220929
Replies: 9
Views: 106

Re: CaK spectroheliogram 220929

Normally yes the 2400l/mm can see that far but because of the design of the grating carrier in the Lhires it won't,my bad for not being clearer with my choice of words,I should say it won't tilt rather than rotate. Local Hobby store stocks various sized sheets of 3-6 ply plywood which I have used in...
by Alun_H
Sun Oct 02, 2022 6:57 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: CaK spectroheliogram 220929
Replies: 9
Views: 106

Re: CaK spectroheliogram 220929

I agree with what you say about the Calcium and the 1200l/mm,I was struggling with the 2400l/mm and a lot of the captured data ended up in the delete bin,but the 1200 seems to tame the blue end. The other reason for my selecting the 1200 is I want to give the Ca II at 8542.1 a go and the 2400 will n...
by Alun_H
Sun Oct 02, 2022 9:04 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: CaK spectroheliogram 220929
Replies: 9
Views: 106

Re: CaK spectroheliogram 220929

Thank you Mark. I'll take a few photos of the rig today and post them later.

Alun
by Alun_H
Sun Oct 02, 2022 9:00 am
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Thank you Mark.

Alun
by Alun_H
Fri Sep 30, 2022 10:51 pm
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Ian at Altair Astro stated that this NUV is much the same spec as the new version of the Baader K line ,so neither of them are suitable for this kind of mod. I will continue with this project as I hate failing,I have found one more shop online with a Baader K line listed so will give them a call Mon...
by Alun_H
Fri Sep 30, 2022 5:42 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: CaK spectroheliogram 220929
Replies: 9
Views: 106

Re: CaK spectroheliogram 220929

Thank you Bastelhannes.

Alun
by Alun_H
Fri Sep 30, 2022 1:48 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: CaK spectroheliogram 220929
Replies: 9
Views: 106

CaK spectroheliogram 220929

Using my Lhires III with 15um slit and 1200l/mm grating and QHY5III 178M to carry out a solar scan yesterday afternoon in the calcium K line with the Evostar 72ED (stopped own to 40mm) and neutral density filter. Forced the scan using x16 speed rate on the CEM60,reconstructed in SER_MAIN and added s...
by Alun_H
Fri Sep 30, 2022 9:47 am
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Hi Mark,

Using the QHY5III 178 with Firecapture I was on zero gain and only around 0.636-0.708ms before the suns disk was overexposed. I have a 2" Baader UV/IR block which I can try next chance I get,cloud looks to be settled in for the whole of today round here.

Alun
by Alun_H
Fri Sep 30, 2022 9:32 am
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Hi John Thank you for clarifying you had the same problem. I have been in contact with Bresser in Germany who then put me in touch with Kerin and it was Kerin that advised me of the time period if it had to go to Germany then onto the US if he himself could not do anything,mind you all it is is to c...
by Alun_H
Thu Sep 29, 2022 6:24 pm
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Received the Altair NUV 7nm earlier today and the clouds broke to allow me to carry out some testing and put it firstly in the Herschel wedge along with UV/IR block filter with the CaK filter from the Lunt and using the 72ED and QHY5III 178M saw absolutely no Calcium K detail whatsoever,just a white...
by Alun_H
Thu Sep 29, 2022 7:59 am
Forum: Solar Scope Modifications
Topic: Lunt Cak B1200 mod question
Replies: 15
Views: 324

Re: Lunt Cak B1200 mod question

Thank you again Mark,I have plenty of adapters so can build a straight through unit no problem,have also got the Altair NUV on order so should be with me in the next couple of days or so,which means more cloud and rain on the way!

Alun
by Alun_H
Thu Sep 29, 2022 12:12 am
Forum: This is SolarChat !!
Topic: Pink Solar Disk / Sept 27th 2022
Replies: 7
Views: 154

Re: Pink Solar Disk / Sept 27th 2022

Good set of images Aaron,thank you for sharing.

Alun
by Alun_H
Thu Sep 29, 2022 12:07 am
Forum: This is SolarChat !!
Topic: Preliminary Ha results from Sept 24 CME
Replies: 14
Views: 210

Re: Preliminary Ha results from Sept 24 CME

Great images Kevin,well done and thank you for sharing.

Alun
by Alun_H
Wed Sep 28, 2022 11:59 pm
Forum: This is SolarChat !!
Topic: Corona from 24 September 2022
Replies: 40
Views: 500

Re: Corona from 24 September 2022

Fantastic images George,thank you for sharing.

Alun
by Alun_H
Wed Sep 28, 2022 11:59 pm
Forum: SPoD Archive
Topic: Corona from 24 September 2022
Replies: 38
Views: 54

Re: Corona from 24 September 2022

Fantastic images George,thank you for sharing.

Alun
by Alun_H
Wed Sep 28, 2022 11:53 pm
Forum: This is SolarChat !!
Topic: AR13105 and AR13107 in Ha 28th September 2022
Replies: 14
Views: 214

Re: AR13105 and AR13107 in Ha 28th September 2022

Fantastic images Stu.

Alun
by Alun_H
Wed Sep 28, 2022 11:46 pm
Forum: This is SolarChat !!
Topic: Sun FD in H-Alpha, CaK and Continuum 21st of September 2022
Replies: 9
Views: 129

Re: Sun FD in H-Alpha, CaK and Continuum 21st of September 2022

Fantastic full disks Arne,thank you for sharing.

Alun