{"id":709,"date":"2017-07-31T13:58:31","date_gmt":"2017-07-31T12:58:31","guid":{"rendered":"http:\/\/www.iangrandjean.com\/blog\/?p=709"},"modified":"2017-07-31T14:00:00","modified_gmt":"2017-07-31T13:00:00","slug":"star-gazing","status":"publish","type":"post","link":"http:\/\/www.iangrandjean.com\/blog\/2017\/07\/31\/star-gazing\/","title":{"rendered":"Star Gazing"},"content":{"rendered":"

If you have looked at the first page of this site recently, you may have noticed a photo of star trails. I decided this was something I needed to add to my repertoire so I waited for a clear cloudless sky (Saturday evening) and loaded up the car with tripods. My chosen spot was actually not far from the house – there’s an agricultural lake surrounded by tall poplar trees – seemed like a good idea.<\/p>\n

This is the lake with the moon rising – before I started what I was there for…<\/p>\n

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\n<\/a>The process to create ‘star trail’ photos is relatively simple – the Earth moves, and with a sufficiently long exposure, the pinpoints of starlight will create lines. Suffice it to say a sufficiently long exposure to create decent trails would be in the order of one or two hours – but the downside would be a severely over-exposed image. The best way, according to Internet, is to take multiple images, and them put them all together with a program adapted (Photoshop) for this. The advantage of this approach is that only the elements that change (i.e.; the light of the stars) will be ‘added ‘ to the initial image – thus avoiding an overexposed foreground.<\/p>\n

After a few exposure tests, I decided I would use 1\/20s at ISO 1600 and aperture f\/4.0 – this example was 60 images.<\/p>\n

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As you can see, I managed to ‘trap’ a shooting star as well!<\/p>\n

I tried another angle for the following shot.<\/p>\n

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If you have looked at the first page of this site recently, you may have noticed a photo of star trails. I decided this was something I needed to add to my repertoire so I waited for a clear cloudless sky (Saturday evening) and loaded up the car with tripods. My chosen spot was actually … <\/p>\n

Continuer la lecture de « Star Gazing »<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-709","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"_links":{"self":[{"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/posts\/709","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/comments?post=709"}],"version-history":[{"count":2,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/posts\/709\/revisions"}],"predecessor-version":[{"id":714,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/posts\/709\/revisions\/714"}],"wp:attachment":[{"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/media?parent=709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/categories?post=709"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.iangrandjean.com\/blog\/wp-json\/wp\/v2\/tags?post=709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}