- Constellation: Sagittarius
- Right Ascension: 17h58m16.1s
- Declination: -29°14'57"
Quick capture of Nova Sgr 2021 No.2 (V6595 Sgr) from last night. Discovered on April 4th, currently around Mag 8.
- Details
- Category: Stars
- Telescope: Explore Scientific 127 Refractor
- Camera: ZWO 1600 MM
- Constellation: Corona Borealis
- Right Ascension: 15h 49m 31.31093s
- Declination: +39° 34′ 17.9111″
- Distance: 8815 ly
- Apparent Magnitude: 7.8 - 10
V Crb is a red giant Mira type carbon star located in Corona Borealis.
- Details
- Category: Stars
- Telescope: Explore Scientific 127 Refractor
- Camera: ZWO 1600 MM
- Constellation: Virgo
- Right Ascension: 12h 25m 14.3952s
- Declination: +00° 46′ 10.9467″
- Distance: 2,300 ly
- Apparent Magnitude: 9.5 - 7.4
SS Vir is a Mira class variable star with a period of 361 days. It is also classified as a carbon star . Carbon stars are red giants that contain an excess of carbon in their upper layers forming sooty layer, scattering the blue/green light, giving them a deep reddish color.
- Details
- Category: Stars
- Telescope: Explore Scientific 127 Refractor
- Camera: ZWO 1600 MM
- Constellation: Cetus
- Right Ascension: 02h 19m 20.79210s
- Declination: –02° 58′ 39.4956″
- Distance: 300 ly
- Apparent Magnitude: 2.0 - 10.1
Mira or Omicron Ceti is a red giant star in Cetus. Prototype for a class of red giant variable stars that pulsate over periods of 100 to 1,000 days. Mira itself pulsates over 331.65 days going from a magnitude 2.0 down to 10.1. The star also undergoes a helium flash period about every 10,000 years. A white dwarf also is in orbit around Mira at 70 AU, and material lost from Mira is accreated by the white dwarf. Not massive enough to end in a black hole, it will eventually lose its out shells and become a white dwarf itself. As it plows through space, the mass lost forms a comet like tail and shock wave bubble in its direction of travel.
- Details
- Category: Stars
- Telescope: EDT 80mm Reftactor
- Camera: ZWO A071 Color
- Constellation: Perseus
- Right Ascension: 03h 08m 10.13245s
- Declination: +40° 57′ 20.3280″
- Distance: 90 ly
- Apparent Magnitude: 2.12 - 3.39
Algol, Beta Persei, sometimes known as the Demon Star was one of the first noticed variable stars, dipping from mag 2.1 to 3.4 every 2 days, 20 hours and 48.8 minutes when a dimmer companion passes in front of it from our viewpoint. Probably noticed by ancient astronomers. It is a multi star system with at least 3 stars in the system. Primary star Beta Persei A is of type B8V, one of the spectroscopic stars B is an orange sub giant of type KOIV, and C is type A7m. The A and B stars are only 0.062 AU apart, while C orbits the pair at 2.69 AU.
7.3 million years ago, Algol came within 9.8 light years of our solar system, it would have shined in the night sky a magnitude brighter than Sirius does today.
It has a very dark reputation in ancient history as a star of death and misfortune.
- Details
- Category: Stars
- Telescope: EDT 80mm Reftactor
- Camera: ZWO A071 Color
- Constellation: Aquarius
- Right Ascension: 22h 38m 33.73s
- Declination: –15° 17′ 57.3″
- Distance: 11.1 ly
EZ Aqr is a triple red dwarf system 11 light years away. Star "C" of the triplet orbits every 3.8 days, the other one "B" has a 823 day period.
All three of the stars have an estimated mass of a tenth of our Sun. No planetary companions have been found as of yet.
Image from 2005 showing its proper motion through the sky.
- Details
- Category: Stars
- Telescope: Explore Scientific 127 Refractor
- Camera: ZWO 1600 MM
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