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Sirius

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3 months 1 week ago #107025 by mariosi
mariosi created the topic: Sirius
Sirius
(/ˈsɪriəs/, a romanization of Greek Σείριος, Seirios, lit. "glowing" or "scorching") is a star system and the brightest star in the Earth's night sky. With a visual apparent magnitude of −1.46, it is almost twice as bright as Canopus, the next brightest star. The system has the Bayer designation Alpha Canis Majoris (α CMa). What the naked eye perceives as a single star is a binary star system, consisting of a white main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, called Sirius B. The distance separating Sirius A from its companion varies between 8.2 and 31.5 AU.(Wikipedia)

Dob 10inches 1200/f4.7
26mm Meade QX 70°

Thanks for looking
Marios

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3 months 1 week ago #107026 by ploughc
ploughc replied the topic: Sirius
Beautiful photo of Sirius Mariosi , did you use a mask.

Pat.
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3 months 1 week ago #107027 by mariosi
mariosi replied the topic: Sirius

ploughc wrote: Beautiful photo of Sirius Mariosi , did you use a mask.

Pat.


No mask. Close up the sketch. The rays are not appear the same time.

Marios

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3 months 6 days ago #107028 by flt158
flt158 replied the topic: Sirius
I wonder if the B companion is visible in this amazing sketch, Marios.

Aubrey.
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3 months 5 days ago #107029 by mariosi
mariosi replied the topic: Sirius

flt158 wrote: I wonder if the B companion is visible in this amazing sketch, Marios.

Aubrey.

Aubrey,
I should have known about B companion and I'm sorry about that. I don't see anything else but only one bright star.

Marios
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3 months 5 days ago #107030 by flt158
flt158 replied the topic: Sirius
I wonder if it is the star at 8 o'clock.
Which way is up and which way is east on your brilliant picture?
It ought to be easy to figure out once we know that information.

Aubrey.
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3 months 5 days ago #107031 by Fermidox
Fermidox replied the topic: Sirius
I'm pretty sure Sirius B is caught in the glare at this scale Aubrey. The star at 8 o'c is further away than some of the other stars, but there wouldn't be anything closer to Sirius visible in a 10" scope. Here's a pic I took in 2016 through an 8 inch and the Pup is similarly drowned out in the glare -



Finbarr.
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3 months 4 days ago #107032 by mariosi
mariosi replied the topic: Sirius

Fermidox wrote: I'm pretty sure Sirius B is caught in the glare at this scale Aubrey. The star at 8 o'c is further away than some of the other stars, but there wouldn't be anything closer to Sirius visible in a 10" scope. Here's a pic I took in 2016 through an 8 inch and the Pup is similarly drowned out in the glare -



Finbarr.


Thank you very much for the informations Aubrey and Finbarr!!

Many thanks
Marios

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