M101与NGC5474

来自一个少见的镜子 少见的CCD 和少见的赤道仪 的作品

Photo By Doug.,N. Jiang
Post Processing By Fluorine Z.
原帖地址：https://www.astrobin.com/397852/

Image Telescope/Lens : Officina Stellare RH-200 MKII
Image Camera : QHYCCD QHY814A
Mount : Astro-Physics 1100GTO CP4

Frames :
Ha : 69x300" bin 1x1
L : 192x120" bin 1x1
L : 64x300" bin 1x1
L : 10x600" bin 1x1
R : 59x300" bin 1x1
G : 102x300" bin 1x1
B : 32x300" bin 1x1


标注版：



也算是尽力了，可能是预处理中出了一些问题导致SNR很差，虽然曝光时间很长

原作者描述如下：

This is the first two project run from the remote observatory.

Both projects have endured numerous issues and some remained unsolved up till today.
Roughly 50% of the subs were disposed due to various reasons. My original intend was to try capture the really faint IFN along with the M101 and outer shell of ngc 5474. Unfortunately I was not able to capture a single trace of IFN. The outer shell of ngc 5474 was barely shown. Therefore, I won't call the project a success. Yet same as the M42, i will suspend it and put it on hold for next year.

All data was collected between February and March 2nd. Several processing attempts were run through these batches of data. In the second attempt, i tried to pull as much information out of these batch of data as possible, yet result in noisy image. The final attempt leans more towards artistic presentation. The highlight was no longer suppress for details and background was dodged to set a dark point.

Remote imaging was proven to be much more challenging then i original expected. However, the better environment has substantially outweigh any short falls.

-Doug

静静 这个目标是不是很暗 我一开始以为三小时差不多 发现啥也没有

熊斯拉 发表于 2019-4-2 07:39
静静 这个目标是不是很暗 我一开始以为三小时差不多 发现啥也没有

我顶着10级光害累计100分钟已经很清晰了 虽然信噪比没法看
啥也没有只能代表你指错位置了

枫华静流 发表于 2019-4-2 08:01
我顶着10级光害累计100分钟已经很清晰了 虽然信噪比没法看
啥也没有只能代表你指错位置了
...

我可能没有正确表达 啥也没有不是目标不在画面中 哈哈

我的朋友居住加拿大一个近期作品

这个构图超好，处理得超好！