Interesting stellar objects 2020

CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Interesting stellar objects 2020

Post by hhzhang »

Building a collection of interesting stars through small telescopes.

I guess this is one the lowest-mass stars you can ever fin. The Teegarden's star. It sits on the lower mass limit of a true star (0.08x mass of Sun) -- which is the upper mass limit of a failed star -- Brown Dwarf.

Image

It is also one of the nearest stars to us, at 12ly. But it is cold (2637K) and dim (~mag 15). But we know this low mass star will shine for trillions of years (conf. to. Sun's 1 billion years ONLY).

Regards,
Haihong
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

Image

Probably the easiest white drawf to spot. In an interesting triple star system!
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

A bright galactic nova for this year. N Ret 2020

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

Barnard's star.

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

Nu Scorpii: a septuple star system

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

A triple star system in Scopion.

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

Epsilon Bootes binary star.

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

70 Oph binary star.

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

Copied from an earlier post.

A supernova from a galaxy far far away.

Image
hhzhang
Posts: 730
Joined: Sun May 10, 2020 4:11 pm
Favourite scope: 115mm APO

Re: Interesting stellar objects 2020

Post by hhzhang »

A new supernova in NGC514.

Image

The host galaxy NGC514, at 82Mly distance, looks so faint in Singapore skies.
Post Reply