Solar Astrophotography, Solar Prominence Photography, Time-lapse Solar Prominence Movies
Lunt LS50F Solar Chromosphere
Jim Ferreira, Livermore CA  bakerst@comcast.net




AR11261, doppler comparison, H-alpha CWL and blue wing filtergrams

AR11260, H-alpha CWL, blue wing and red wing, 25 July 2011

Active Regions AR11263, AR11261 and AR11260, 29 July 2011, H-alpha montage

Time-lapse animation of AR11260, approximately 50 minutes.


AR11244, quiescent filament, H-alpha, Lunt LS50F


AR11236, sunspots, H-alpha filtergram, doppler, H-alpha blue wing, H-alpha red wing, Lunt LS50F



Activated solar prominence over AR11178

activated filament, filament eruption, doppler effect, Ha CW, Ha blue wing & red wing, Lunt LS50F

H-alpha filtergrams and dopplergrams of active region filament over AR11180

H-apha filtergrams and dopplergrams of active region filament over AR11176

Solar filament evolution in AR11171


Active Region AR11164 - sunspots, active region filaments, plage, flare

Active filament sequence, AR11164    Lunt LS50F   DMK21

active filament and sunspot group, AR11163 & AR11164, blue wing H-alpha, red wing H-alpha, 5400 Angstrom continuum, Lunt LS50F


Ellerman Bombs in AR11158, blue wing and red wing H-alpha, Lunt LS50F


Active region 11140 ans sun spot imaged at centerline H-alpha and -0.5 Angstrom, blue wing

Active region 11142 and dynamic filament, H-alpha center line and -0.5 Angstrom blue wing


Massive quiescent filament near AR11112 - small filament outbursts

Seeing conditions allowed a relatively detailed close up of AR11112 and neighboring quiescent filament



Subflare and filament outburst near sunspot in AR11109, Lunt LS50F


Doppler effect study of AR11108 and sunspots, red light continuum, Lunt LS50F


Rapid development and fading of subflare near sunspot in AR11106, sequence, Lunt LS50F


Surge prominences / sub flares, AR11106, Lunt LS50F


Quiescent filament, doppler effect, Lunt LS50F



Full disk image of the chromosphere with filaments and sunspot in AR11093


Doppler effect study of AR11087 in H-alpha





Filaments and plages viewed in H-alpha center line, blue and red wing, 24 April 2010

Study of sunspots in AR11057, H-alpha center line and several steps into both blue and red wings of H-alpha, 27 March 2010


Doppler effect study of AR11045, imaged in the light of H-alpha center line, and, blue and red wing H-alpha, 7 February 2010








Equipment

WARNING!  The sun cannot be viewed with just any telescope or pair of binoculars.  WARNING!
Very special filters must be used on the telescope to avoid serious eye-damage, or, total loss of eye sight.



Lunt LS50F  SV102ED  DMK21







Lunt LS50F Hydrogen-alpha filter is used on a 4" ED refractor for close up viewing and imaging.  When attached to the 2.5" f/6 ED refractor the system becomes a pseudo prominence telescope, allowing me to image the entire solar disc.  A solar wedge system with green continuum filter is used with the 4" refractor for white light viewing and imaging.   DMK21 and DMK41 monochrome USB video cameras are used on the equipment pretty exclusively.  I seldom view through eyepieces, preferring the considerable flexibility of adjusting the view on the laptop monitor for exposure, gain and gamma. 



DMK21  DBK21  SV102ED  Losmandy GM8







 The entire system is carried on a Losmandy GM8 mount.  Note the small solar finder scope that uses a pinhole to project a tiny solar image on a translucent screen.












A roll around computer cart fitted with a dark cloth is used while viewing the laptop monitor.  The focusers on both scopes are easy to reach and adjust while still under the cloth.  I do need to stand up, though, to tune the H-alpha filter.  This is probably as close as I will come to having an observatory....








Two fans are used on the computer cart, one to help cool the laptop (out of view in this image), the other, the white tower, blows air on me.   I will shortly replace the black felt with a lighter weight, dull silver cover which will be opaque to sunlight, and be cooler to work under. 

With the telescope slow motion controls there at the laptop, and comfotably seated, I can spend extended periods of time viewing and imaging both the chromosphere and prominences with either scope, avoiding prolong skin exposure to direct sun.




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