Starship Asterisk*

Ann, thank you for another well illustrated lecture! I found the image showing the future parts of the Local Group galaxies particularly interesting.

The "Discuss" menu item is missing on todays APOD image, which is quite impressive (the image, that is).

Ann writes: "a G2 star" "an O5 star" Yes, of course. :oops: I'am sure my English teacher taught me this many years ago, forgive an old Dane! You mention the spectacular image of the Rosetta Nebula by Jean M. Dean. I searched for her on APOD. Her image appeared in fact here in 201...

Using Wikipedia and the SIMBAD database I have identified the following stars: The brightest one in the picture is a foreground star, 12 Monocerotis, a K0 giant at a distance of 462 la with V = 5.83. The bright blue star to its right is the O4 star HD 46223 at a distance of 4680 la with V = 7.28. Th...

Ann writes:

I'm sure you're all taking notes!

Indeed, I always enjoy reading your mini-lectures with their attention to interesting details!

When seeing illustrations of this kind, I am always a little suspicious: Are the discs shown really that large? So I did a little calculation using data (in green) from the Internet: TRAPPIST system.jpg The central star has an angular diameter of about 1°, twice the value of that of the Sun as seen ...

I am intrigued with the comparison of Barnard 68 in visible and infrared light, as presented by ESO https://www.eso.org/public/images/eso0102c/ : https://cdn.eso.org/images/screen/eso0102c.jpg Background stars are heavily reddened from the passage of their light through the cloud; red colour chosen ...

When this image was posted on APOD several years ago, I had the same problems with it as Ann. An earlier post http://asterisk.apod.com/viewtopic.php?t=41170 suggests that the peak is ”Pilan” looking over Laupstad in the Austnesfjord. According to https://mapcarta.com/N6391608680 Pilan’s position is ...

Very interesting comparison, Ann, thank you for your effort. Your desciptions helped finding the same features on different images.

The extreme projection used makes it difficult to identify stars. I beleive I have found the pair Alpha and Beta Centauri at about 2 o'clock, the Coalsack with the Southern Cross (upside down :wink:) at 1 o'clock, the Eta Carinae nebula in the Milky Way at 12 o'clock and above it, close to the upper...

Much attention to details has been put into this excellent picture. Note that the star labels are written with colors simulating the stars'.

Here is an annotated image showing what I think I have identified. The bright object near the Moon at 10 o'clock could be Saturn. I have been using Starry Night for identification.

I agree with Ann: This is a wide angle shot going from one horizon to the opposite one, and the Moon is heavily overexposed. It is indeed the Pleiades which can be seen on the right side of the image at the height of the tower. Capella is visible as the bright star just right of the tower. Higher up...

This is an intriguing image. There seems to be no exterior crater wall. Perhaps this is due to the low gravity on Mimas, resulting in permanent ejection of all material which was blown out at the impact? Also, the crater has a steep, smooth wall. Is the reason, that the inside of the crater at some ...

I thought I found my error: In my original post I did not place quotation marks around the caption text when using img3. However, adding them changes nothing. So I follow Ann's advice and post the code used, with quotation marks: [img3="Planetary grouping 2022-06-24 05:45"]https://scontent...

If you click the image icon, the picture will show and you can see its URL: " https: //scontent.fcph2-1.fna.fbcdn.net/v/t39.30808-6/290190941_5507685332609343_4502699444870739134_n.jpg?_nc_cat=106&ccb=1-7&_nc_sid=730e14&_nc_ohc=kNY8kW6YFuwAX-WCqjp&_nc_ht=scontent.fcph2-1.fna&...

What I meant was, that the picture does not show here on the Asterisk page (such as Ann's pictures), but one can see it by clicking the image icon. I used the "img3" button in the editor: [ img3="Caption" ] Image URL [ /img3 ] (without the supplementary spaces). So, what should I...

Ann, following the link you gave I found this image by Wright Dobbs: https://scontent.fcph2-1.fna.fbcdn.net/v/t39.30808-6/290190941_5507685332609343_4502699444870739134_n.jpg?_nc_cat=106&ccb=1-7&_nc_sid=730e14&_nc_ohc=kNY8kW6YFuwAX-WCqjp&_nc_ht=scontent.fcph2-1.fna&oh=00_AT8lpt38...

Ann writes: But I don't think the image does a very good job of showing us their true brightness difference (or albedo, which is a measure of how much of the light that hits them that is reflected by them). Because in reality, Venus is a much, much more reflective body than the Moon, but the true al...

A fascinating picture indeed! I have identified some of the background stars: The relatively bright one to the right is Arcturus. At top middle one can see the tail of the Great Bear - together with a small sporadic meteor trail, I presume. To the left of the aurora one can discern the W of Cassiope...

The caption ends with a link to a NASA page containing the following illustration (Credits: X-ray: NASA/CXC/University of Alberta/A.Bahramian et al.; Illustration: NASA/CXC/M.Weiss, reduced size). 47tuc.jpg It shows the white dwarf to the left and the black hole and its accretion disk to the right. ...

Using Starry Night I have identified the bright object to the right as Jupiter and the bright star just right of the comet's tail as Fomalhaut.

Ann, thank you for the effort you have taken to produce this interesting supplement!
Holger

Thanks to Joe Stieber for the identification and johnnydeep for the finding chart. I looked for the Kids much closer to Capella.
Also I can see now that the stars to the right lie in the eastmost part of Perseus.

A serene picture indeed! I have difficulties in identifying the stars. At first I thought that the bright star in the middle must be Capella and part of Perseus standing at the top right, a familiar summer view here from Denmark. But inspection of the high resolution image (which shows a lot of star...