Tag Archives: CEM70g

Comparison of ZWO 7nm Oiii (2018 version) versus Baader 6.5nm Narrow Band OIII Filter – CMOS Optimised (2021)

Earlier this year purchased a ZWO ASI1600mm Pro + 36mm 7-position filter-wheel complete with the LRGBNB filter set. The ZWO filters represent very good value and I have had a lot of fun with them. However, of the set the … Continue reading

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The Crescent Nebula NGC6888

This is was my first image of the 2021 season after a long break. It’s the result of two nights of roughly 1hr total for LRGB, 2hrs Ha and 5hrs Oiii.  I’ve been practicing with methods to combine the images… LRGB subs … Continue reading

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The Wizard Nebula NGC7380 in HOO

This is the Wizard Nebula. I’m told it is supposed to look like a wizard in a pointed hat and gown with open arms. I imaged this over two nights under very bad weather conditions and a bright moon. I … Continue reading

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The Cocoon Nebula IC5146

After cleaning and correctly(!) fitting my LRGB filters I decided to go a for a bright broadband target. Clouds, moon and poor seeing did not help but I managed about 45 mins each for RGB and Ha – shot with the ASI1600mm. … Continue reading

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SH2-101 The Tulip Nebula

I imaged this nebula over 2 nights, several weeks ago in August but I had a terrible time processing the data. I was convinced I had some issues with my flats and then my subs. Then I was sure I … Continue reading

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Messier 51 and first light for my Orion Optics 250mm rebuild

This LRGB image is the result of 3 hrs of imaging with many lost subs due to cloud and some RA imbalance issues. Probably only 1.5hrs with most of those softened by clouds. This results in a noisy and more … Continue reading

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Messier 63 – LRGB

I had a few things to crack like the differential flexure and misting up of the camera that trashed a lot of the subs I took in a 3hr session. As a result, at first when I processed the image … Continue reading

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NGC 6888 LRGB + HOO

This is my first image of this season after a long break. It’s the result of two nights of roughly 1hr total for LRGB, 2hrs Ha and 5hrs Oiii. I’ve been practicing with methods to combine the images… This final … Continue reading

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