香港天文論壇

多得日圓兌港圓仍處於低位，帶來 Vixen SXD2 赤道儀的售價從來未曾這麼低。

最新型號，WiFi 版 SXD2-WL 赤道儀本體(見附圖)最新售價: HK$12700.

舊版需要使用的 Star Book Ten controller (SB10) 已不再生產，但 SB10 仍可繼續用來控制新版 SXD2-WL，只是不能透過使用 WiFi 來遙控赤道儀的操作。

有興趣購買的話，快快捉緊這個難得的低價機會。PM 或電話與我聯絡。

現在越來越多人喜歡用smart phone/tablet 透過WiFi 遙控赤道儀/天文架台作天文攝影/觀測, 所以日本Vixen生產這個 wireless unit/module 來代替傳統的Star book Ten controller (SB10) 好讓使用者在屋內/車內（若距離不是太遠的話）可以舒服地遙控SX2/SXD2/SXP2做天文工作. 使用了這個 wireless unit 之後, 就可以不再需要用SB10, 改用smartphone/tablet(已從日本vixen 官方網站下載有關操作程式）遙距操控了. 同時, 因應SB10 controller 已停止供應, 這個wir...

164. M8

Taken with EF400mm F5.6L lens + 40Da in Coonabarabran in 2013 @F5.6
13x300s @iso1600, with dark and bias calibrated in PI
Autoguided with Vixen GP mount
Processed in PI and PS

花開花謝，生命規律

M仔 kit 鏡 (EF-M15-45mm)影荷花，總算入有我有
話時話，多年沒到雲泉看/影荷花，今年7月中去，竟然荷花仍未開晒
攝於11/7, M5 + EF-M15-45mm f/3.5-6.3 IS STM kit lens @45mm F8

17. Tailor-made M5 nuts for my observatory

So as to save some cost, tailor made 114 pcs of M5 nuts manually by me for my observatory

163. M56 Very unfortunately, malfunction happened to my ZWO EFW. So I had to shoot DSO with 071C instead of 1600MM last night. Vixen SD115S + 071C in YL last night @908mm F7.9, Bortle 8-9 6x300s, with darks, flat calibrated in DSS Autoguided with Vixen SXD2 mount Processed in PI and PS Transparency ...

28. Milky way with fisheye zoom lens

EF8-15mm F4L zoom lens + unmodified 100D in 2014 in Australia @12mm F4
9x120a @iso1600, with dark and bias calibrated in PI
Unguided with Vixen Polarie star tracker
Processed in PI and PS

162. M17

Taken with EF400mm F5.6L lens + 40Da in Coonabarabran in 2013 @F5.6
7x480s @iso800, with dark only calibrated in PI
Autoguided with Vixen GP mount
Processed in PI and PS

161. Helix Just a play of combining Ha data as L channel and color data taken with 100Da L channel = Ha = 9x600s, with dark and bias calibrated in PI Taken with Vixen SD115S + SD reducer kit + 1600MM in Yuen Long in Hong Kong in 2021 @700mm F6.1 Autoguided with Vixen SXD2 mount Color Data 11x300s @i...

160. Reprocessed RHO

Taken with EF35mm F2 lens + 100Da in Lantau Island in Hong Kong in 2015 @F4
5x240s @iso400, with dark and bias calibrated in PI
Unguided with Vixen Polarie star tracker
Reprocessed in PI and PS

Re-stacked and reprocessed in PI with bias, dark and flat calibrated.

Improved a little bit or not?

159. SN 2023ixf in M101 Just a record on it. Taken with Vixen SD115S apo + SD flattener + 1600MM in Yuen Long in HK tonight @908mm F7.9 L=46x30s @sensor temperature of 0C, with dark calibrated in DSS only Autoguided with Vixen SXD2 mount Processed in PI First-quarter moon high over in the sky Transp...

27. Eta Carinae nebula

Taken with Vixen ED81SII apo + SD reducer kit + 1600MM in NZ in 2018 @495mm F6.1
LRGB = 10x120s : 6x180s : 5x180s : 5x180s, with dark, bias and flat calibrated in PI
Autoguided with Vixen AP mount
Processed in PI and PS
Very windy

Reprocessed the above image once more with less contrast adjustment.