9/14 ~9/15
這一兩天的下半夜天氣都不錯,因此今晚即使九點多鞍部還在雲層中,甚至偶而還飄點小雨,但看衛星雲圖似乎這一大片雲很快會通過,且郊山方便稍微多等待一下也無妨,於是我還是很耐心的等雲層通過,果然將近十點時雲皆散近,夜空變得相當乾淨,
看星星之外,今晚主要是要曝Sh 2-129 & Ou4,這個目標個人估計至少累積曝光時間目標要達到二十四小時以上,所以是能曝時就曝一些想到就曝一些,慢慢累積,
這一晚約曝了兩個半小時左右。
另外順便拍了一下心臟與靈魂兩個星雲,不過我都把靈魂星雲叫做嬰兒星雲,因為長得很像小Baby。
The weather in the second half of the night has been good for the past two days, so even though it was still cloudy in Anbu at around 9:00 pm tonight, and it even drizzled occasionally, the satellite cloud map showed that this large cloud would pass quickly. It's also convenient to wait a little longer in the suburbs, so I waited patiently for the clouds to pass. As expected, the clouds cleared up around 10:00 pm and the night sky became very clear.
In addition to seeing the stars, the main goal of tonight was to expose Sh 2-129 & Ou4. I personally estimate that the target exposure time should be at least 24 hours, so I try to expose as much as possible when I can, and accumulate it slowly.
I exposed for about two and a half hours tonight.
I also took a picture of the Heart and Soul Nebulae, but I call the Soul Nebula the Baby Nebula because it looks like a little baby.
Sh2-129 共曝2.5小時
Pentax 75SDHF+0.72x reducer, K5(full spectrum mod.) , IDAS NB1 filter
5min x 29, Siril
自己搜尋天體的好處之一是,在尋星鏡內能看到哪些參考星,找過一次後印象便會很深刻,像Sh2-129 即使看不到星雲本身但從 7x35尋星鏡就可以直接瞄準 HR8119與V419cep這兩顆星(即Ou4烏賊所在的位置)。
西沉的夏季大三角與銀河天鵝段
可以比較我之前以電台附近為背景拍的星景,譬如今年的英仙座流星雨的影像,便可以知道多了那個白光的強照明差異有多大,這個燈印象近一年內才出現的,偶而會開啟。
僅各曝5分鐘 ISO3200
因為下午還要上班,所以大約凌晨四點時便整理器材山,回家補眠去。
這晚濕度雖有點高,但在高於80%以後我便預先開啟加熱線,設在溫差約6度C (90%)以上設在8度,整晚都沒有結露。
換新插座後運轉相當順利。
乾淨的夜空使用手機曝光十秒也可看到淡淡的銀河。
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