Delta Scorpii – Dschubba
Delta Scorpii – Dschubba
A binary star system located at 136 parsecs (443.573 light year) from Earth in the constellation Scorpius.
δ Scorpii is the system’s Bayer designation. The two components are designated Delta Scorpii A and B.
The primary, δ Scorpii A, is a B class sub-giant surrounded by a disc of material spun off by the rapidly rotating star. The secondary, δ Scorpii B,
orbits every 10.5 years in a highly elongated elliptical orbit; it appears to be a normal B class main sequence star.
Delta Scorpii A is a Gamma Cass variable star.(the prototype variable star that it most resembles)
This type of star shows irregular slow brightness variations of a few hundredths of a magnitude due to material surrounding the star.
Delta Scorpii usually shines at magnitude 2.3 but has shown that it fluctuates to as bright as 1.8. It is easily visible to the unaided eye from most urban locations, so an easy one to watch by periodically glancing at the center star at the head of the Scorpion.
Delta Scorpii bore the traditional name Dschubba. In 2016 the International Astronomical Union organized a Working Group on Star Names (WGSN)
to catalogue and standardize proper names for stars. The WGSN approved the name Dschubba for δ Scorpii A on 21 August 2016 and it is now so
entered in the IAU Catalog of Star Names.
Captured with my 12″ diameter F4 TPO Newtonian telescope, Bisque ME Mount, Canon 6D DSLR, ISO 800, 3 minute exposure from my observatories in Yellow Springs, Ohio.
Best Regards,
John Chumack
www.galacticimages.com
The Moon, Saturn, & Jupiter Triangular Conjunction 08-20-2021
I almost forgot to post this one…
Here is a quick shot 4.0 second exposure with Camera on a Tripod taken on 08-20-2021 showing the nearly Full Moon with the Planet Saturn above it,
and The planet Jupiter to the far left creating this wonderful right triangle conjunction.
I was on business in the Lexington, KY area and
while visiting with my niece Lisa, we watched the Moon and two planets rise above the neighborhood houses as seen from her backyard in Versailles, Kentucky.
I captured them on 08-20-2021 at 10:01pm EST.
Canon 6D DSLR camera, 24mm to 105mm lens, set to 45mm at F6.3, ISO 800, 4 second exposure camera on a tripod.
Best Regards,
John Chumack
www.galacticimages.com
The Planet Saturn on 08-20-2021
The Milky Way , Mars, and Saturn over Pinnacles at Arches
The Recurrent Nova RS Ophiuci in outburst on 08-11-2021
There is a Bright Nova(not Supernova) in the sky right now easily visible in binoculars, just after dark in the constellation Ophiuchus.
The Recurrent Nova RS Ophiuci is in outburst again, noticed on August 8-9th, the last time I shot RS in outburst was back in February of 2006, the time prior to that was in 1985, see my NASA APOD link for my older 2006 photo of this Recurrent Nova.
https://apod.nasa.gov/apod/ap060224.html
Now 15 years later it has erupted once again…now it is at 4.8 magnitude. I captured it last night while out watching the Perseid meteor shower.
We know of only 10 Recurrent Nova in our galaxy, so this is a rather rare event, it typically will brighten up every 15 to 20 years,
RS Ophiuci usually has a variable magnitude of 9.5 to 13.5, but now it is shining at 4.8 magnitude.
to learn more about what is happening in this binary star system, read my past NASA APOD link above.
The Recurrent Nova RS Ophiuci is currently in Outburst so go take a look, at 4.8 magnitude pretty easy to see, if you know where to look or
if have a computerized telescope, type in these J 2000.00 Coordinates RA 17h 50’ 13.2” & DEC -06 deg 42’ 28”.
Happy Nova Hunting!
The Nova is the brightest star at center of my image.
Captured with my TPO 12″ diameter F4 Newtonian reflector telescope, Baader Coma Corrector, Bisque ME mount,
a modified Canon 6D DSLR, ISO 800, 6 minute exposure from my observatories in Ohio, USA on 08-11-2021.
Best Regards,
John Chumack
Altair – The Brightest Star in Aquila
Altair is a very bright Star and has one of the most stunning background star fields. You’ll want to put this sharp image up full screen!
Also designated α Aquilae (Alpha Aquilae, abbreviated Alpha Aql, α Aql), is the brightest star in the constellation of Aquila (The Eagle)
and the twelfth brightest star in the night sky. It is currently in the G-cloud—a nearby interstellar cloud, an accumulation of gas and dust.
Altair is an A-type main sequence star with an apparent visual magnitude of 0.77 and is one of the vertices of the “Summer Triangle” asterism
(the other two vertices are marked by Deneb and Vega).
Altair is about 1.8 times the mass of the Sun and 11 times of its luminosity. Altair rotates rapidly, with a rotational period of about 9 hours,
compared to our Sun which completes a rotation in a little over 25 days.
It is relatively close by at 16.7 light-years (5.13 parsecs) from the Earth and is one of the most visible stars to the naked eye.
TPO 12 inch F4 Newtonian reflector telescope, Baader Coma Corrector, Bisque ME mount, Modified Canon 6D DSLR,
ISO 800, 4 minute exposure, captured from my observatories in Ohio on 08-02-2021.
Best Regards,
John Chumack
Jupiter with Ganymede Shadow Transit on 08-01-2021
M8 The Lagoon Nebula (HAP Modified Canon 6D)
M8 The Lagoon Nebula Complex in Sagittarius (Modified Canon 6D)
The Lagoon Nebula is a giant interstellar cloud in the constellation Sagittarius, also known as Messier 8, NGC 6523, Sharpless 25, RCW 146, and Gum 72.
It is classified as an emission nebula and as an H II region. The Lagoon nebula is a massive star formation region.
Located 5,200 light-years from Earth, M8 is home to its own star cluster: NGC 6530, The massive stars embedded within the nebula give off enormous amounts of ultraviolet radiation, ionizing the gas and causing it to shine.
The Lagoon Nebula was discovered by Giovanni Hodierna before 1654 and is one of only two star-forming nebulae faintly visible to the unaided eye from mid-northern latitudes. Glowing at magnitude 6.0 and is great in binoculars or any size telescope. The Nebula is 90 arc-min x 40 arc minutes in size and easily fits in the FOV of most wide-field eyepieces.
My Friend Hap Griffin Modified one of my Canon 6D DSLR’s recently, and I am very happy with the Modified 6D’s extended red sensitivity now, the result from my test the other night is amazing at just 31 minutes of exposure.
(Thanks HAP for such a great modification to my old Camera)
HAP Modified Canon 6D (for extended red sensitivity), TPO 12 inch diameter F4 Newtonian telescope, Bisque ME mount. ISO 800, 31 x 1 minute subs exposures stacked in DSS for total of 31 minute total integration time from my observatories in Ohio on 08-02-2021.
Best Regards,
John Chumack
Saturn on 08-01-2021
Saturn reaches opposition tonight and
Saturn’s rings show noticeable brightening at opposition, known as the Seeliger effect.
The planet Saturn is currently 828.98 million miles from Earth.
Here is my shot of Saturn from my backyard observatory in Dayton, Ohio
Early Sunday morning.
Profile=Saturn
Diameter=18.52″
Magnitude=0.18
CMI=323.1° CMIII=254.1° (during mid of capture)
Focal Length=4650mm (F/16) C-11 Telescope(+Barlow), MYT Mount, QHY5III290M, EFW, LRGB Astronomik,
Resolution=0.13″
Date: 08-01-2021 07:38 UT
Dayton, Ohio USA
seeing: 5/10 average, fire smoke haze present..
Fire-Capture Software, Ser Files, 32fps,
3039 frames stacked in Autostackert, Registax6, Adobe CS.
M57 The Ring Nebula Close-up with C-11_QHY5III462C
M57 The Ring Nebula in Lyra – An Extreme Close-up C-11 & QHY462C Camera.
I was originally Setup and ready to image Jupiter with a 2x Barlow, but was waiting for Jupiter to clear my Neighbors trees in the East,
so I decided to swing over to the ring nebula to try an extreme close-up with this QHY’s uncooled planetary camera just to kill time.
It actually turned out okay for being an uncooled Cmos planetary video camera..and even showed some nice details in the ring too.
The Ring Nebula is a dying star blowing off its outer atmosphere. Through most telescopes it appears rather small, 1 arc-min, but it is very bright, 8.8 mag., and with a little magnification you can visually see what looks like a smoke ring or a Cheerio floating in space.
Messier 57 or M57 is a planetary nebula in the northern constellation of Lyra. It is located at 2,283 light years from Earth.
The Planetary Nebula’s diameter is about 1 light year(5.8 trillion miles). Such a nebula is formed when a star, during the last
stages of its evolution before becoming a white dwarf, expels a vast luminous envelope of ionized gas into the surrounding interstellar space. The 15.2 Magnitude star at the center of the Nebula is the White Dwarf.
Captured, 63 x 10 sec. exp., Fire-Capture FITS files, 30 dark frames, no flats needed since the FOV is so narrow and evenly lit near center.10 minutes & 30 seconds total integration time, before the clouds rolled in.
Scope: C-11, F10, Mount: Bisque MYT, Camera: QHY5III462C, Binned 1×1, Gain: 330, 2x Barlow, (F20 FL: 5600mm) FOV: 3.5′ x 2.5′ Res: 0.12″ Captured from my backyard observatory in Dayton, Ohio USA on 07-27-2021 @ 03:11 U.T.
Best Regards,
John Chumack
www.galacticimages.com