Search found 41 matches

by Merrill55
Sun Dec 23, 2018 5:04 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: magnetic fields
Replies: 7
Views: 294

Re: magnetic fields

Takashi Sakae got 10830A photo already.
But I did not see his photo.

Merrill55
by Merrill55
Sat Dec 22, 2018 10:48 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: magnetic fields
Replies: 7
Views: 294

Re: magnetic fields

Thank you p_zetner,
I reading your report carefully.

Takashi Sakae's PDF file is as follows;

http://www.asj.or.jp/geppou/archive_ope ... 12_865.pdf
by Merrill55
Sat Dec 22, 2018 4:19 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: magnetic fields
Replies: 7
Views: 294

Re: magnetic fields

Thank uyou p_zetner,

When solar is active ,I will try to do it.

Merrill55
by Merrill55
Sat Dec 22, 2018 4:13 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Helium Disk: 08Aug2018 Spectroheliogram
Replies: 14
Views: 602

Re: Helium Disk: 08Aug2018 Spectroheliogram

Thank you for the reply.
Very old time,Norikura Coronal Observatory successed to get green emmision line.

Merrill55
by Merrill55
Sat Dec 22, 2018 4:13 am
Forum: SPoD Archive
Topic: Helium Disk: 08Aug2018 Spectroheliogram
Replies: 13
Views: 374

Re: Helium Disk: 08Aug2018 Spectroheliogram

Thank you for the reply.
Very old time,Norikura Coronal Observatory successed to get green emmision line.

Merrill55
by Merrill55
Sat Dec 22, 2018 3:22 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: magnetic fields
Replies: 7
Views: 294

magnetic fields

2018_10_01
AR2723 by Kenko PRO1 Digital C-PL(W) (1/4 lambda plate + PL plate)
My first magnetic Fields photo by Digital_Spectro_Heliograph.

Merrill55

== Referencies by Takashi Sakae ==
by Merrill55
Sat Dec 22, 2018 2:59 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Helium Disk: 08Aug2018 Spectroheliogram
Replies: 14
Views: 602

Re: Helium Disk: 08Aug2018 Spectroheliogram

Very interesting !

Have you tried line spectrum 5303A ?
I did'nt yet.

Merrill55
by Merrill55
Sat Dec 22, 2018 2:59 am
Forum: SPoD Archive
Topic: Helium Disk: 08Aug2018 Spectroheliogram
Replies: 13
Views: 374

Re: Helium Disk: 08Aug2018 Spectroheliogram

Very interesting !

Have you tried line spectrum 5303A ?
I did'nt yet.

Merrill55
by Merrill55
Tue Aug 07, 2018 11:41 pm
Forum: Solar Scope Modifications
Topic: Details of a telecentric lens for C8 Edge and Daystar filter
Replies: 10
Views: 1088

Re: Details of a telecentric lens for C8 Edge and Daystar filter

How does the method of the heat of the primary mirror-proof reach?
by Merrill55
Mon Jul 16, 2018 10:43 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 12
Views: 775

Re: Recent Digital SHG

Thank you Joe.
Not yet.
I blocked almost stray light carefully.
I suppose it owes the rear surface of collimator lens.
For h-alpha light,I use a red filter on the front of telescope lens .
I will use the block bead for strong gohst.
by Merrill55
Mon Jul 16, 2018 12:59 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 12
Views: 775

Re: Recent Digital SHG

Thank you. My SHG has low contrast and I have an optical axis is not to match definitely. For the good capture, good seeing is necessary. Including a background, as for the good seeing of 3 minutes, it is rare. Birds and clouds, an airplane, the strong wind are enemies. I am improving it now to exte...
by Merrill55
Sat Jul 14, 2018 9:44 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 12
Views: 775

Re: Recent Digital SHG

Grating is 1800 grooves/mm,68.5mm*68.5mm of Richaedson Gratings.
by Merrill55
Sat Jul 14, 2018 9:07 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 12
Views: 775

Re: Recent Digital SHG

Telescope is Diameter 80mm and Focal length 910mm of acromatic lens.
Collimator, Camera lens is Diameter 70mm and Focal length 700mm of achromatic lens.
Slit width is about 20 micron.
I used 2* barlow lens. Telescope's effective focal length is about 1800mm.
CCd camera is ASI1600MM.
by Merrill55
Sat Jul 14, 2018 5:53 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 12
Views: 775

Recent Digital SHG

Trial H-alpha photo in 2018_07_14_07:12(JST) by Digital Spectro_Helio_Graph.
by Merrill55
Wed May 09, 2018 1:17 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Re: Recent Digital SHG

Trial H-alpha photo in 2018_05_09_10:44(JST) by Digital Spectro_Helio_Graph
by Merrill55
Fri Apr 13, 2018 7:36 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Re: Recent Digital SHG

Trial H-alpha photo in 2018_04_13_08:04(JST) by Digital Spectro_Helio_Graph.
Somewhat blur image.
by Merrill55
Fri Mar 09, 2018 12:38 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Re: Recent Digital SHG

When seeing is good, I want to photograph it ,because a fluctuation is reduced.
In addition, I want to wait for time because I can raise fps when the intensity of light of the sun is high.
by Merrill55
Wed Mar 07, 2018 5:40 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Re: Recent Digital SHG

Recent h-alph photo
I changed grating from DPI Grating to Richardson Grating.
by Merrill55
Tue Jan 23, 2018 11:02 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Re: Recent Digital SHG

Thank you all.
I'm going to change to Richardson grating from very old Diffraction Products Inc(20 years old).
It takes 3weeks.
by Merrill55
Sun Jan 21, 2018 10:07 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Recent Digital SHG
Replies: 14
Views: 1815

Recent Digital SHG

I got new h-alpha image today.

Merrill55
by Merrill55
Thu Jan 11, 2018 7:26 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: ROT2 command of IRIS
Replies: 53
Views: 5730

Re: ROT2 command of IRIS

Thank you all.

My recent photo is as follows;


Toshio Ohnishi
by Merrill55
Sun Dec 10, 2017 3:47 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: ROT2 command of IRIS
Replies: 53
Views: 5730

Re: ROT2 command of IRIS

Hi all;
Recent my SHG image.
Low contrast !!
by Merrill55
Tue Jan 03, 2017 12:13 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: ROT2 command of IRIS
Replies: 53
Views: 5730

Re: ROT2 command of IRIS

Bartolick; Yes,I should pay attention to stray light. I recognize it. Littrow lens cause a strong ghost.(Acromatic lens cause four goast) The binoviewer cause a strong ghost of the slit shape. Therefore I block it using red filter (R64) in the lower part of the binoviewer. When I use other wavelengt...
by Merrill55
Sat Dec 31, 2016 7:22 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: ROT2 command of IRIS
Replies: 53
Views: 5730

Re: ROT2 command of IRIS

Trial h-alpha photo by short SHG. 2016_12_31
by Merrill55
Sun Dec 25, 2016 10:36 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: ROT2 command of IRIS
Replies: 53
Views: 5730

Re: ROT2 command of IRIS

Merry Christmas all.
Have a nice holy night !!

Toshio (a part of HYLOV P.233)