seeing the deep-sky Bonnievale, South Africa How to get the most - - PowerPoint PPT Presentation
Auke Slotegraaf Astronomical Society of Southern Africa Deep Sky Observing Section How to see the deep sky a practical workshop to help you get the most out of your telescope time Southern Star Party seeing the deep-sky Bonnievale, South
a practical workshop to help you get the most out
Auke Slotegraaf
Astronomical Society of Southern Africa Deep Sky Observing Section
introduction
practical perception practical history communication practical a checklist practical
2011 March 05
Southern Star Party
Bonnievale, South Africa
How to get the most out of your precious telescope time
Auke Slotegraaf
ASSA Deep-sky Secon
introduction practical history communication practical a checklist practical
astronomy as experience, in addition to measurement units
words: WOW!, ooooh! etc. ;-)
practical perception
introduction
perception
practical history communication practical a checklist practical
practical
introduction
perception
practical history communication practical a checklist practical
practicalAWB
A collecon of processes that organize input
h y s i c a l s
u l u s → p h e n
e n
i c a l e x p e r i e n c e .
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
wavelength of light chemistry of photo-receptors
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
rhodopsin concentraon dark adaptaon averted vision
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
aenon
atude set cognive schema learning
“There is nothing more painful for me at this stage in my life than to walk down the street and hear footsteps and start thinking about robbery – and then look around and see somebody white and feel relieved.” — Jesse Jackson
Sir John Herschel & the Whirlpool Galaxy
p h y s i c a l p h y s i
i c a l a ff e c
e n e u r
i c a l c
n i
e
A collecon of processes that organize input
aenon
atude set cognive schema learning:
“ change in response potenality ”
“Seeing is in some respects an art which must be learnt... Many a night have I been praccing to see, and it would be strange if one did not acquire a certain dexterity by such constant pracce.” — William Herschel, 1782
What kind of constant pracce should an observer embark
the result of percepon can be a more meaningful and rewarding phenomenological experience?
What are your first impressions? How easy is it to see? (visibility; magnitude) What shape is the nebula? How big is the nebula? How does the brightness change (brightness profile) Is there a nuclear region? Are the edges sharp or diffuse? Are there areas of uneven brightness? How well does the nebula stand out? What colour is the nebula? Are there stars very near/within the nebula? How does it relate to the surrounding star field? Rate your confidence in this observaon.
What are your first impressions? How easy is it to see? (visibility; magnitude) What shape is the cluster? How big is the cluster? Are individual stars seen? Are the stars concentrated towards the centre? How does the brightness change (brightness profile)? How many stars can you see? What is the range of their brightness? Is there an obvious central or other prominent star? Do any of the stars have a parcular colour? Are any of the stars double? Are there chains, rows, or clumps of stars?
nebulae star clusters
A good descripon should allow the reader to re-create a mental image
at the eyepiece.