Search found 107 matches

by AndrevdHoeven
Tue Oct 03, 2017 6:59 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Totality - Report and images from Wyoming - an overview
Replies: 3
Views: 753

Re: Totality - Report and images from Wyoming - an overview

I do agree fully with you Alexandra. To share the experience is very nice for sure!
by AndrevdHoeven
Tue Oct 03, 2017 5:55 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Totality - Report and images from Wyoming - an overview
Replies: 3
Views: 753

Totality - Report and images from Wyoming - an overview

The full scale images can be seen via this link: http://www.astro-photo.nl/uncategorized/total-eclipse-2017-the-experience By now it's already 5 weeks ago that the Total Solar Eclipse took place in the US which millions of people looked forward to for a long time. Now I'm finally finished with proce...
by AndrevdHoeven
Thu Sep 28, 2017 11:44 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Lunar Limb profile extraction from Solar Eclipse imagery
Replies: 8
Views: 825

Re: Lunar Limb profile extraction from Solar Eclipse imagery

This image is an further work on a previous image that I released last week. After finding that it was possible to bring out details of the lunar limb using the imagery made during the total eclipse I started looking a bit further into the topic. It showed that there is very nice software from the I...
by AndrevdHoeven
Tue Sep 26, 2017 8:11 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Lunar Limb profile extraction from Solar Eclipse imagery
Replies: 8
Views: 825

Re: Lunar Limb profile extraction from Solar Eclipse imagery

Amazing work Andre, it matches very well indeed, superb science :) so now you can name the mountains that caused the beads? :bow :hamster: Alexandra I even got a request from the maker of the software package to use the images to do some scientific measurements :) Always like something like that...
by AndrevdHoeven
Tue Sep 26, 2017 10:00 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Lunar Limb profile extraction from Solar Eclipse imagery
Replies: 8
Views: 825

Re: Lunar Limb profile extraction from Solar Eclipse imagery

That is definitely possible. I already was looking at that :)
by AndrevdHoeven
Mon Sep 25, 2017 8:13 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Lunar Limb profile extraction from Solar Eclipse imagery
Replies: 8
Views: 825

Lunar Limb profile extraction from Solar Eclipse imagery

A while ago I saw a post from Pete Lawrence from BBC Sky at Night on Facebook in which he showed that you can see the lunar limb profile in the images from the Baily beads taken during the solar eclipse. When I started making an beads sequence I remembered this post and thought it was worthwhile to ...
by AndrevdHoeven
Fri Sep 01, 2017 11:15 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Solar eclipse (also annotated with scale and star field)
Replies: 5
Views: 753

Solar eclipse (also annotated with scale and star field)

This image shows an a so-called Pellett processing of the Solar Corona during the last eclipse as made in Teton Village, WY. I made about 22 images using several exposures to try to catch the complete corona during the eclipse and the surrounding star field. The equipment used for this image was a N...
by AndrevdHoeven
Wed May 11, 2016 12:52 pm
Forum: This is SolarChat !!
Topic: Finally the Sun again - Mercury transit
Replies: 3
Views: 292

Finally the Sun again - Mercury transit

Lately I have been finally picking up pace with the Sun again. I bought an ASI174mm and now I can shoot the full disk with my Lunt 60. That makes life so much easier :) Here are some images of the transit and a time-lapse... https://vimeo.com/166129151 And here are the images: Transit_multiple.jpg s...
by AndrevdHoeven
Thu Apr 16, 2015 8:30 pm
Forum: This is SolarChat !!
Topic: Sun 16-04-2015 H-alpha
Replies: 7
Views: 213

Sun 16-04-2015 H-alpha

The sun today with my Lunt-60 in H-alpha:
sundisk_16042015_ha.jpg
by AndrevdHoeven
Mon Apr 13, 2015 7:18 pm
Forum: This is SolarChat !!
Topic: Back from the 'dark ages' :)
Replies: 9
Views: 421

Re: Back from the 'dark ages' :)

Thanks everybody! Nice to be back :)
by AndrevdHoeven
Sun Apr 12, 2015 9:36 pm
Forum: This is SolarChat !!
Topic: Back from the 'dark ages' :)
Replies: 9
Views: 421

Back from the 'dark ages' :)

The sun today taken in H-alpha with a Lunt 60mm solar telescope... Taken just before it dissappeared behind my house through some thin cloud layers. Very happy with this one, as it is my first solar image since October 2014... In the mean time we had the dark, cloudy ages here... sundisk_ha_12042015...
by AndrevdHoeven
Sat Oct 04, 2014 8:41 pm
Forum: This is SolarChat !!
Topic: Filaments and sunspots 04/08/2014
Replies: 5
Views: 338

Filaments and sunspots 04/08/2014

Today I had the opportunity to further use my new solar setup. It consists of a TMB92 with a Lunt LS75Ha etalon.

The image was made with a 2.5x power mate and a DMK21-618.
sunspots_04102014_ha.jpg
by AndrevdHoeven
Tue Sep 09, 2014 7:52 pm
Forum: This is SolarChat !!
Topic: Sun H-alpha September 8
Replies: 4
Views: 290

Sun H-alpha September 8

Hi everybody,

It seems like ages since I took my last solar image. Recently I obtained a TMB92 and yesterday I put my Lunt LS75 with a BF1200 on it. I have to say the view was very nice. Here is the mosaic I made in two color styles:
by AndrevdHoeven
Thu Mar 20, 2014 8:20 pm
Forum: This is SolarChat !!
Topic: Surge on the Limb Spider and the Moon
Replies: 16
Views: 720

Re: Surge on the Limb Spider and the Moon

These are very, very nice. Would love to see an animation of them...
by AndrevdHoeven
Thu Mar 20, 2014 8:19 pm
Forum: This is SolarChat !!
Topic: Good Seeing
Replies: 14
Views: 664

Re: Good Seeing

Very nice images! Crisp and clear...
by AndrevdHoeven
Tue Mar 18, 2014 9:58 pm
Forum: This is SolarChat !!
Topic: Huge prominence lifting off yesterday
Replies: 22
Views: 1043

Re: Huge prominence lifting off yesterday

Planeskies1: live your animation. Think we covered this one nicely.
by AndrevdHoeven
Mon Mar 17, 2014 10:22 pm
Forum: This is SolarChat !!
Topic: Huge prominence lifting off yesterday
Replies: 22
Views: 1043

Re: Huge prominence lifting off yesterday

I also made a quick animation of two images 16 minutes apart. The motion in that time is about 60.000 km. This gives an escape speed of about 250.000 km/h. Wow!
prom_16032014_ANIM.gif
prom_16032014_ANIM.gif (169.98 KiB) Viewed 989 times
by AndrevdHoeven
Mon Mar 17, 2014 9:21 pm
Forum: This is SolarChat !!
Topic: Huge prominence lifting off yesterday
Replies: 22
Views: 1043

Re: Huge prominence lifting off yesterday

Thanks everybody.

@zorgdotnl: I love your sketch! It fits almost perfectly...
by AndrevdHoeven
Mon Mar 17, 2014 8:08 am
Forum: This is SolarChat !!
Topic: Huge prominence lifting off yesterday
Replies: 22
Views: 1043

Huge prominence lifting off yesterday

Yesterday I saw this one just before sunset. It was moving very fast (estimated about 250.000 km/h) and beautiful to see. Did anybody see this one?
sun_disk_16032014_hugeprom-earth.jpg
sun_disk_16032014_hugeprom-earth.jpg (130.98 KiB) Viewed 1043 times
by AndrevdHoeven
Tue Jan 14, 2014 4:32 am
Forum: This is SolarChat !!
Topic: Sun whitelight 12th January 2014
Replies: 7
Views: 132

Re: Sun whitelight 12th January 2014

Everybody thanks for the nice comments!
by AndrevdHoeven
Mon Jan 13, 2014 7:28 am
Forum: This is SolarChat !!
Topic: Sun whitelight 12th January 2014
Replies: 7
Views: 132

Sun whitelight 12th January 2014

It was a long time ago I did whitelight imaging of the sun. Yesterday it was a bit clear (lots of haze) and the sun was just above the rooftops. I wanted to see the big sunspot I was reading a lot about lost few days, so I caught it just before it will disappear in the coming days.... Telescope: Rob...
by AndrevdHoeven
Tue Jul 09, 2013 9:52 am
Forum: This is SolarChat !!
Topic: Some nice activity in images and animation...
Replies: 3
Views: 91

Some nice activity in images and animation...

The sun showed very nicely the last days here in Holland. Here are some images and an animation I made...











[video width=425 height=344 type=vimeo]69942500[/video]
by AndrevdHoeven
Wed May 29, 2013 9:29 pm
Forum: This is SolarChat !!
Topic: The sun on 27th May 2013
Replies: 2
Views: 83

The sun on 27th May 2013

Here are two images taken with my Lunt LS75 on an ED110 refractor. Weather was quite good. Unfortunately I have some problems with tuning so I keep having gradients. I already tried to contact Lunt to see if the etalon is working properly...



by AndrevdHoeven
Sun Apr 07, 2013 10:31 pm
Forum: This is SolarChat !!
Topic: Great sun today on 07042013
Replies: 7
Views: 204

Great sun today on 07042013

Today the sun was having some quite spectacular image possibilities. Here are some images from today:





I was astonished by the size of this prom. I didn't see this during imaging...