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m051-adpadd16_ps_usm_lvl_spek_.jpg

m051-adpadd16_ps(usm,lvl,spek).jpg

(m051-adpadd16_ps(usm,lvl,spek).jpg)



M51

This was taken from the 764mm (30") f/4.8 Challenger observatory scope. It is 16 images stacked. I beleive this was with a 300d camera.