Search found 10 matches

by HunterofPhotons
Fri Apr 02, 2021 6:45 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 3521: Galaxy in a Bubble (2021 Apr 02)
Replies: 10
Views: 4485

Re: APOD: NGC 3521: Galaxy in a Bubble (2021 Apr 02)

It would be nice if they had specified collection data such as equipment and the parameters of the image acquisition as is customary.

dan k.
by HunterofPhotons
Sun Dec 29, 2019 4:37 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Cassini Spacecraft Crosses Saturn's... (2019 Dec 29)
Replies: 11
Views: 3090

Re: APOD: Cassini Spacecraft Crosses Saturn's... (2019 Dec 29)

Why does Saturn's upper pole appear at the one o'clock position and it's bottom pole is shown to be at the six o'clock position? I've never seen this before.

dan kowall
by HunterofPhotons
Wed Jul 25, 2018 2:39 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Edge-On Spindle Galaxy (2018 Jul 25)
Replies: 8
Views: 2320

Re: APOD: The Edge-On Spindle Galaxy (2018 Jul 25)

" In Hubble pictures, I believe that the overall color of galaxies like NGC 5866 are defined as "white", and only details in the galaxy and in the background are shown as non-white (in contrast to the presumed overall whiteness of the galaxy)." Although the assignment of color in...
by HunterofPhotons
Thu May 24, 2018 2:02 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Gum Nebula Expanse (2018 May 24)
Replies: 4
Views: 7558

Re: APOD: The Gum Nebula Expanse (2018 May 24)

Exquisite.
Wonderfully planned and executed and the processing is spot on.
Well done, John.

dan kowall
by HunterofPhotons
Thu Jan 11, 2018 4:03 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: RCW 114: A Dragon's Heart in Ara (2018 Jan 11)
Replies: 23
Views: 9809

Re: APOD: RCW 114: A Dragon's Heart in Ara (2018 Jan 11)

Is the remnant even in the frame? Might it even be visible? The filaments visible in the image are the remnant of the star that exploded as a supernova. Sorry, I meant the pulsar that's what's left of the star... It's in the field of view although I'm not sure if it's visible. Click on the 'identif...
by HunterofPhotons
Sun Sep 17, 2017 8:32 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Bright Spiral Galaxy M81 (2017 Sep 17)
Replies: 20
Views: 6739

Re: APOD: Bright Spiral Galaxy M81 (2017 Sep 17)

It looks like you have two images where the obscured data behind the spikes or blooms in one image is available in the other image. That's an ideal situation to remove blooms or reduce spikes is it not?

dan kowall
by HunterofPhotons
Thu Jan 28, 2016 4:55 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Elliptical M60, Spiral NGC 4647 (2016 Jan 28)
Replies: 40
Views: 6325

Re: APOD: Elliptical M60, Spiral NGC 4647 (2016 Jan 28)

It's very typical when processing to set a white point based on an elliptical galaxy. If you're talking about a 'white point' which is the maximum pixel value of a particular image then any entity in the image suffices, be it a galaxy, star, or any bright object. If, on the other hand, you're talki...
by HunterofPhotons
Mon Sep 15, 2014 6:19 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: 62 Kilometers above Comet... (2014 Sep 15)
Replies: 41
Views: 109566

Re: APOD: 62 Kilometers above Comet... (2014 Sep 15)

Chris Peterson wrote: .... The thrusters are not required to maintain this orbit....
Thanks for the information, Chris.
I wouldn't have thought that a body that size would have enough 'pull' to hold Rosetta in orbit.

dan k.
by HunterofPhotons
Mon Sep 15, 2014 3:41 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: 62 Kilometers above Comet... (2014 Sep 15)
Replies: 41
Views: 109566

Re: APOD: 62 Kilometers above Comet... (2014 Sep 15)

Can Rosetta orbit the comet utilizing just the low gravity of the comet or does it have to use its thrusters to maintain the orbit?

dan k.
by HunterofPhotons
Mon Feb 17, 2014 7:37 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Cosmic Web of the Tarantula Nebula (2014 Feb 17)
Replies: 38
Views: 9658

Re: APOD: The Cosmic Web of the Tarantula Nebula (2014 Feb 1

It would have been nice if he had fixed the blooms on the bright stars and backed off on the sharpening a bit as the brighter stars have the doughnut profile of over-sharpened stars.

dan k.