AAS: solar activity history
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
AAS: solar activity history
Shows an image of Hevelius solar observatory set up circa 1600.
- Lady Fraktor
- Articles: 0
- Posts: 10027
- Joined: Mon Apr 29, 2019 9:14 pm
- 5
- Location: Slovakia
- Status:
Offline
Re: AAS: solar activity history
I have a digital copy of Selenographia and another atlas by Johannes Hevelius.
Hopefully this minimum does not decide to stretch out like the Maunder Minimum though.
See Far Sticks: Elita 103/1575, AOM FLT 105/1000, Bresser 127/1200 BV, Nočný stopár 152/1200, Vyrobené doma 70/700, Stellarvue NHNG DX 80/552, TAL RS 100/1000, Vixen SD115s/885
EQ: TAL MT-1, Vixen SXP, SXP2, AXJ, AXD
Az/Alt: AYO Digi II, Stellarvue M2C, Argo Navis encoders on both
Tripods: Berlebach Planet (2), Uni 28 Astro, Report 372, TAL factory maple, Vixen ASG-CB90, Vixen AXD-TR102
Diagonals: Astro-Physics, Baader Amici, Baader Herschel, iStar Blue, Stellarvue DX, Tak prism, TAL, Vixen
Eyepieces: Antares to Zeiss (1000101)
The only culture I have is from yogurt
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: AAS: solar activity history
From a solar observer's POV you are of course quite right. From the different POV of species suicide due to climate change another Maunder Minimum might be just what we need to save our bacon from being fried in our own self heated pan.Lady Fraktor wrote: ↑Tue Dec 03, 2019 7:44 pm Thank you for the posting.
I have a digital copy of Selenographia and another atlas by Johannes Hevelius.
Hopefully this minimum does not decide to stretch out like the Maunder Minimum though.
- Altocumulus
- Articles: 0
- Posts: 622
- Joined: Fri May 10, 2019 1:23 pm
- 4
- Location: Aberdeenshire, Scotland
- Status:
Offline
-
TSS Photo of the Day
Re: AAS: solar activity history
I do what I do because I can, and because I want to.
It doesn't mean I know what I'm doing
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: AAS: solar activity history
The use of optics for starting fires was known to Archimedes.Altocumulus wrote: ↑Wed Dec 04, 2019 7:26 am Wonderful story. I wonder who was the first person to realise that projecting the image was safer than not
https://en.m.wikipedia.org/wiki/Archimedes
Hevelius solar observatory is essentially a camera obscura equipped with a lens instead of a simple pinhole. These were in use ~50 years prior to Hevelius.
https://en.m.wikipedia.org/wiki/Camera_obscura
- yobbo89
- Moderator
- Articles: 0
- Posts: 2604
- Joined: Sat May 11, 2019 7:44 pm
- 4
- Location: australia qld brisbane
- Status:
Offline
-
TSS Photo of the Day
Re: AAS: solar activity history
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .
- notFritzArgelander
- In Memory
- Articles: 0
- Posts: 14925
- Joined: Fri May 10, 2019 4:13 pm
- 4
- Location: Idaho US
- Status:
Offline
-
TSS Awards Badges
Re: AAS: solar activity history
There have been differently defined ways of counting spots over the 400 year data history. In the 19th century Wolf standardized a method. If you're interested there's a neat history of sunspot observation and data here:
https://arxiv.org/pdf/1407.3231.pdf
Also interesting equipment photos.
Create an account or sign in to join the discussion
You need to be a member in order to post a reply
Create an account
Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute