#1  
Old 19-06-2018, 09:31 PM
Tropo-Bob (Bob)
Registered User

Tropo-Bob is offline
 
Join Date: Sep 2013
Location: Cairns
Posts: 1,584
HERCULES - The Grand Tour

Below are the subjects in Hercules that I wish to view:-

The Main Stars:

Alpha Herculis. (Rasalgethi). This is a fine double star of contrasting colours. The primary is a variable.
https://en.wikipedia.org/wiki/Alpha_Herculis

Beta Herculis. (Kornephoros). A yellow giant, which is a spectosopic binary.
https://en.wikipedia.org/wiki/Beta_Herculis

Gamma Herculis, another spectosopic binary.
https://en.wikipedia.org/wiki/Gamma_Herculis

Delta Herculis. Double stars for small telescopes calls this a showcase pair. I look forward to seeing it.
https://en.wikipedia.org/wiki/Delta_Herculis

Epsilon Herculis. A multiple star system, but the components are not visible to amatuer scopes.
https://en.wikipedia.org/wiki/Epsilon_Herculis



Objects of interest:

NGC 6210. A relatively bright planetary nebula, at Mag 8.8.
https://www.spacetelescope.org/images/potw1026a/

NGC 6229. The third globular in Hercules. I was wondering if I will see this, but feel much easier after reading the cloudynights thread.
http://www.capella-observatory.com/I...rs/NGC6229.htm
https://www.cloudynights.com/topic/6...r-in-hercules/

Rho Herculis. Double stars for small telescopes also calls this a showcase pair.
https://en.wikipedia.org/wiki/Rho_Herculis

95 Herculis. Again, Double stars for small telescopes calls this a showcase pair.
https://www.youtube.com/watch?v=ig50oBWhu1I

Zeta Herculis. A fast moving binary (34 years) that is only 35 light years away. Luckly for me, it is approaching it widest seperation (see first website for a diagram), though it still may be a difficult one to split.
https://www.google.com.au/search?q=Z...6t26Z5EqN022M:
https://en.wikipedia.org/wiki/Zeta_Herculis



There are two Messier objects in Hercules; they being the well known globulars M13 & M92.
Reply With Quote
  #2  
Old 20-06-2018, 08:35 AM
Tropo-Bob (Bob)
Registered User

Tropo-Bob is offline
 
Join Date: Sep 2013
Location: Cairns
Posts: 1,584
My observations

Last night, I viewed these object in Hercules. I was up late to see the faint globular without moonlight, but all the other targets were viewed under a six-day old Moon. I used my Tak 100 (F7.4).

Objects of interest:

NGC 6210. A relatively bright planetary nebula, at Mag 8.8.
This was a small planetary that featured the typical aqua-blue hue. It looked like a blurry star at 30x, but even then, its colour was seen. I liked the view best with 50x.

NGC 6229. The third globular in Hercules.
This globular might be visible under moonlight, however I could not find the guide stars that I needed to hop to this unfamiliar object. This is a faint, small, but visually rewarding object. Using only 23x, it looked like a hairy star. Using 30x, it appeared as a globular with a star like centre. However, as I increased the magnification, the centre looked more broad and completely lost any semblance of being condensed. Thus, it was best viewed with a variety of magnifications.

Rho Herculis. Double stars for small telescopes also calls this a showcase pair.
Rho was split cleanly using 74x, which left the stars appearing very close and to about one magnitude different in brightness. I overlooked recording the colour, but from memory, they were white.

95 Herculis. Again, Double stars for small telescopes calls this a showcase pair.
A slightly uneven pair that was split with 30x, but was best viewed using 74x. I expected the colours to be similar, but I saw the primary as white and the secondary as light yellow.

Zeta Herculis. A fast moving binary (34 years) that is only 35 light years away. Luckily for me, it is approaching it widest separation.. . though it still may be a difficult one to split.
I could not split this using powers up to 148x. I first recorded Zeta's colour as being white, but changed it to a very light yellow.



The Main Stars:

Alpha Herculis. (Rasalgethi). This is a fine double star of contrasting colours.
This is a glorious orange star with a light blue companion, which was seen well using 74x. Last night, the brightness difference between the pair seemed to be the largest (about 2 mags) that I have ever noticed. The primary is variable, so I assume it was near maximum brightness.
Regarding the blue companion, it looked a deeper blue, not the blue-white that is often seen in bright stars.

Beta Herculis. (Kornephoros). A yellow giant...
Beta appeared to be of a medium-yellow hue.

Gamma Herculis, another spectosopic binary.
Gamma is white, but surprising had a wide companion star of about 9th Magnitude. It looked best using 30x. Higher powers made the gap be unappealingly wide.

Delta Herculis. Double stars for small telescopes calls this a showcase pair. I look forward to seeing it.
Delta appeared to be light yellow, with a wide, faint companion. The separation was much less that of Gamma's and I thought the companion also looked fainter. Nevertheless, it was a good sight using 50x, however, I thought it was disappointing after being described as a showcase pair.

Epsilon Herculis.
A white star that looked somewhat fainter than other stars in Hercules with lower designations.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 11:50 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement