![](https://coimages.sciencemuseumgroup.org.uk/20/125/large_thumbnail_1943_0184.jpg)
Sky Sketches, illustrating optical phenomena
- artist:
- William Ascroft
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/617/small_thumbnail_1888_0156_0012_0007.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/619/small_thumbnail_1888_0156_0012_0009.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/616/small_thumbnail_1888_0156_0012_0006.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/615/small_thumbnail_1888_0156_0012_0005.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/618/small_thumbnail_1888_0156_0012_0008.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/614/small_thumbnail_1888_0156_0012_0004.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/611/small_thumbnail_1888_0156_0012_0001.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/613/small_thumbnail_1888_0156_0012_0003.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/41/612/small_thumbnail_1888_0156_0012_0002.jpg)
![Sky Sketches, illustrating optical phenomena](https://coimages.sciencemuseumgroup.org.uk/19/543/small_thumbnail_1888_0156_0012.jpg)
One frame containing nine sketches, including three entitled 'Sunset and afterglow at No. 3' dated May 9, and six sketches entitled 'Sunset with Bishop's Ring strongly defined; afterglow; rose slush 8 oclock; No. 4, 8.15; 8.30; No. 6, 9 oclock', dated May 10, by William Ascroft, London, England, 1884