A Gallery of Solar Images, taken on campus at Fresno State


The Sun
The Sun in white light
, 2005 April 16, a single 1/15-s exposure with a Canon-EOS 300D Digital Rebel AstroCamera (modified for astrophotography by Hutech) at ASA 100 through a Unitron 102-mm refractor at f/14.7 and a Thousand Oaks solar filter and unsharp masked by Frederick A. Ringwald.


The Sun
Solar observing at the Vintage Days Fair
,
2005 April 16, snapshot by Frederick A. Ringwald.


The Sun
The Sun in H alpha light
, 2005 April 16, full-color Registax stack of 70 (out of 328) x 1/30-s Philips ToUcam II exposures through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and unsharp masked by Frederick A. Ringwald.


The Sun
The Sun in H alpha light
, 2005 April 16, full-color Registax stack of 71 (out of 321) x 1/30-s Philips ToUcam II exposures through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and unsharp masked by Frederick A. Ringwald.

The Sun
The Sun with three large sunspot groups
in 2003 November, 1/8-s white-light exposure on 200-speed Kodak Gold 35-mm film through an Orion 90mm refractor and an Orion full-aperture glass solar filter at f/10 and unsharp-masked by Frederick A. Ringwald.



Helios-1 solar telescope on 2008 April 19
The Helios-1 solar telescope
, 2008 April 19,
with the Central Valley Astronomers during Vintage Days at Fresno State, snapshot by Frederick A. Ringwald.





The Sun
The Sun with two sunspot groups
on 2006 December 1, average of ten (out of 114) 1/160-s white-light exposures with a Canon-EOS 300D Digital Rebel AstroCamera (modified for astrophotography by Hutech) at ASA 100 through an Orion 90mm refractor and an Orion full-aperture glass solar filter at f/10 and wavelet processed by Frederick A. Ringwald.

The active Sun 
in Halpha on 2012 June 8
The active Sun in H alpha
, 2012 June 8,
Registax composite of 169 (out of 305) exposures, with the prominences shot separately with 10x longer exposures, with a Lumenera SKYnyx 2-2 monochrome USB camera through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and wavelet processed and colorized by Frederick A. Ringwald.


The active Sun in 
Halpha on 2012 June 8
The active Sun in H alpha shown in a different color scheme
, 2012 June 8,
Registax composite of 169 (out of 305) exposures, with the prominences shot separately with 10x longer exposures, with a Lumenera SKYnyx 2-2 monochrome USB camera through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and wavelet processed and colorized by Frederick A. Ringwald.


The Sun's atmosphere awakens
The Sun's atmosphere awakens
as the Sun comes out of solar minimum, 2022 April 30 image in H alpha light, Registax composite of 529 exposures with the prominences shot separately with longer exposures with a Lumenera SKYnyx 2-2 monochrome USB camera through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and wavelet processed and colorized by Frederick A. Ringwald.


The quiet Sun's lower 
chromosphere
The quiet Sun's lower chromosphere
, 2009 July 6, full-color Registax stack from 300 x 1/12-s Orion Starshoot III exposures through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed by Frederick A. Ringwald.


The active Sun's lower 
chromosphere
The active Sun's lower chromosphere
, 2012 June 5,
full-color Registax stack of 300 x 1/12-s Orion Starshoot III exposures through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed by Frederick A. Ringwald.


Transit of Venus
Transit of Venus
, 2012 June 5,
full-color Registax stack of 300 x 1/12-s Orion Starshoot III exposures through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed by Frederick A. Ringwald.

The active 
Sun's lower chromosphere
The active Sun's lower chromosphere
, 2012 July 2, Registax stack of 300 exposures with a Lumenera SKYnyx 2-2 monochrome USB camera through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed and colorized by Frederick A. Ringwald.


The biggest sunspot group in 
years in Ca K
The biggest sunspot group in years in the light of Ca K
, 2012 July 10, Registax stack of 300 exposures with a Lumenera SKYnyx 2-2 monochrome USB camera through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed and colorized by Frederick A. Ringwald.


The biggest 
sunspot group in years in white light
The biggest sunspot group in years in white light
, 2012 July 10, mosaic of four Registax stacks of 300 exposures with a Lumenera SKYnyx 2-2 monochrome USB camera through an Orion 90mm refractor and an Orion full-aperture glass solar filter at f/10 and wavelet processed and colorized by Frederick A. Ringwald.

The active Sun's 
chromosphere
The active Sun's chromosphere
, 2024 April 20, Registax composite of over 300 exposures with the prominences shot separately with shorter exposures with a Lumenera SKYnyx 2-2 color USB camera through a Coronado Helios 1 (70mm, f/5.7, 0.8nm bandpass) solar telescope and wavelet processed by Frederick A. Ringwald.
The active Sun's lower chromosphere
The active Sun's lower chromosphere
, 2024 April 20, Registax composite of over 300 exposures, with a Lumenera SKYnyx 2-2 color USB camera through a Coronado Ca K (70mm, f/5.7, 0.22nm bandpass centered at 393.4nm) solar telescope and wavelet processed by Frederick A. Ringwald.

The active Sun's photosphere
The active Sun's photosphere
, 2024 April 20, Registax stack of over 300 exposures with a Lumenera SKYnyx 2-2 color USB camera through an Orion 70mm f/7.1 White-Light Solar Refractor Telescope and wavelet processed by Frederick A. Ringwald.


Click here for the Main Gallery.



Last updated 2024 May 19. Web page by Professor Ringwald (ringwald[at]csufresno.edu and replace [at] with @)
Department of Physics, California State University, Fresno. Please read this disclaimer.