Starship Asterisk*

DWB-111 Propellor Nebula by Andre van der Hoeven, on Flickr

Noctilucent Clouds over the Eifel, Germany by Andre van der Hoeven, on Flickr

The Cave Nebula in Cepheus


SH2-155 Cave Nebula (color reprocessed) by Andre van der Hoeven, on Flickr

Recently on the Dutch site astroforum.nl an initiative was started to share raw image data and see if it was possible to combine different datasets to get more out of the data. The first object that was decide upon was NGC2237, aka the Rosette Nebula. Several observers uploaded their data to an ftp ...

https://farm2.staticflickr.com/1589/25630738980_382b9ed911_c.jpg M106 High resolution - Amateur/pro data by Andre van der Hoeven , on Flickr This image shows a unique view of M106 in the highest resolution obtainable from Earth until now I think. The image was made with the 3.6m CFHT telescope in H...

I wholeheartedly agree, Andre. I love your image. As for the IFN, have you any idea if some extra-thick IFN is superimposed just on the edges of the well-known fantastic Ha nebulas of M82, or are we really seeing the remnants of an older or just less ionized bona fide M82 nebula there? Ann I don't ...

Please let's not forget this image was not made for scientific purposes, but to show the IFN in this region together with the galaxies. As said this is the power of imaging. If you want to do science one should use the raw data and can do scientific measurements. The brightness difference is huge, t...

You have a very good point there that I completely forgot

As a first order approximation your thought can be right, but I think when you look at a more detailed simulation you do need the stars also. The black hole is about 70 million solar masses. This is about 0.07% (assuming only stars of solar mass..., probably it's a lot lower percentage) of the total...

Julian, I have to say that I respect a lot that you respond now and show your apologies. I think a lot of people wouldn't do that. You probably learned a lesson and I really hope that you will go on in this fantastic hobby with a new view on things. Good luck!

Very nicely written Stephen! Everybody can make a mistake and now it's time to correct and move on. Don't give up and learn a lesson, because the hobby is really great!

This image is a continuation of an image I made in 2014 of the M81/82 galaxy group. I made the images and found signals of integrated flux nebula surrounding the galaxies. Soon after that I got in touch with Neil Fleming who had a splendid image of the IFN in this region on his website and a fellow ...

With the exposure times given it's impossible to get such an image of Saturn under these conditions. There is much more here which is wrong. I'm sorry, but I truly believe it's faked. Maybe he did observe the transit, but he did not image it for sure in this way.

Milky way with meteor strike...


Milky Way with meteor strike by Andre van der Hoeven, on Flickr

https://farm6.staticflickr.com/5763/23511440451_84b0be990d_c.jpg Summer Triangle and Milky Way by Andre van der Hoeven , on Flickr In this image we see the Summer Triangle as seen from Austria in the summer of 2015. The image was taken using a Nikon D810a equipped with a Nikkor 14-24mm lens. The Su...

Cygnus Wall - A stellar nursery by Andre van der Hoeven, on Flickr

A much improved version:


IC 1848 Soul Nebula - reprocessed by Andre van der Hoeven, on Flickr

IC1848 The Soul Nebula by Andre van der Hoeven, on Flickr

Lunar eclipse 28 September 2015 - chronological order by Andre van der Hoeven, on Flickr

A few months ago I was crawling through the Canada-France-Hawaii Telescope (CFHT) data and found this very nice dataset of the Draco Triplet. I decided to download it for later use. Now I processed the data and this is the result of the processing. As far as I know this is the image of the Draco Tri...

A horizon to horizon view of the Milky Way taken in Germany at the night of the Perseid maximum.


Milky Way with Perseids - Neroth, Germany by Andre van der Hoeven, on Flickr

To be honest I don't think it is an illusion, but we will never know for sure. It's clearly expanding in a straight line (I checked the images) at a regular interval. So that seems to be a constant motion that has started at the onset (explosion?). It would be too much coincidence I think to try to ...

When processing my Milky Way image I noticed a meteor in one of the images. After seeing this post on the internet: I thought what if? Could it be that I had something like this also? And it shows that it was indeed also an expanding cloud here... WOW!!!! I think this is quite a unique observation.....

Milky Way with overview of visible objects

Milky Way with visible objects by Andre van der Hoeven, on Flickr

A very nice Milky Way as seen from Austria seen during my holiday.



Milky Way Austria - reprocessed by Andre van der Hoeven, on Flickr