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Astrophotography 101 - youtube videos version

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by

Graeme Stanley

on 8 April 2014

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Transcript of Astrophotography 101 - youtube videos version

Graeme Stanley
Astronomical Society of South Australia
What is astrophotography?
The basic ingredients
Equipment and methodology
Processing
Time lapse
Next steps
What is astro photography?
equipment
location
patience
processing
= night time photography?
that 'perfect' shot
The basic ingredients
time-lapse
trails
contrast
noise
brightness
foreground
deadwoods
reflection
silhouette
lots and LOTS of patience
focal length
aperture
ISO
focus
exposure
manual
SLR
compact
The basic ingredients >
Equipment >
Equipment
Aperture, Exposure & ISO >
Methodology
Processing >
- set exposure time to 30 secs
- set ISO to 3200
- focus on a bright star (or planet)
- set focal length (zoom)
- add 2 second delay
- shoot... and EXPERIMENT!
- switch to manual
=
$
switch to manual
set focal length (zoom)
set exposure time to 30 secs
set ISO to 3200
KNOW YOUR CAMERA!
Processing
Time lapse >
Time lapse
What is time lapse?
Star trails >
Next Steps?
Summary >
Star trails
Next Steps >
Star trails
Thank you!
300mm 60sec untracked
300mm 60sec tracked
60 sec ISO 1600
60 sec ISO 3200
60sec tracked, ISO 1600
unprocessed
15 mins exposure
Summary
KNOW YOUR CAMERA!
Experiment! (SD cards are cheap!)
Go to a star party
Ask lots of questions
Be patient
Have fun!
Astrotrac
SkyTracker
Skywatcher HEQ5
Vixen Polarie
expensive!
limited to 2hours
small payload
no extra light gathered,
just more amplification
Aperture, Exposure & ISO
30 mins exposure
Methodology >
Aperture, Exposure & ISO
conditions
light pollution
cloud
skippy sky
moon phase
BOM Adelaide
Look up
Photoshop
contrast +50
replace color fz 100, lt -25
saturation +40
time to set up
HEAVY!
add 2 second delay
focus on a bright
star or planet
aperture
exposure
ISO
motion blur
bokeh
noise
Astrophotography 101
90sec ISO 100
Betelgeuse
Bellatrix
Saiph
Rigel
Mintaka
Alnitak
M42
Alnilam
Full transcript