Author Archives: paul

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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The Andromeda Galaxy M31

This is the result of 3hrs and 50 minutes of 5min subs @ ISO800 using my resurrected Canon 550d, Optolong L-pro, Altair 70mm EDT-F on my trusty HEQ5pro. I’m pretty happy with picking up the star bridge between M31 and … Continue reading

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Now take my Soul, IC1848 the Soul nebula in SHO

Right next to the Heart ( IC1805 The Heart Nebula – SHO) you will find the Soul. This was trickier for me to process than the Heart nebula. Although it was clear, conditions were not great and I had few … Continue reading

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IC1805 The Heart Nebula – SHO

This is my first imaging season using narrow band filters on a mono camera. I’m enjoying the freedom to image and not fight moonlight or light pollution from the city. The Heart nebula (IC1805) is in the constellation of Cassiopeia. … Continue reading

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The NorthAmerican Nebula NGC7000 in SHO

This image is the result of 13 hrs of imaging. I still have much to learn about image processing but I am quite happy with this result. The S1, Ha and Oiii subs were 120s @gain 200 to avoid burning … 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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IC 1396 The Elephant’s Trunk Nebula

This is a narrow band S2, Ha, O3 image taken over 6 hours (2hrs each) in one night. Imaged with my Altair Astro 70mm ED-Triplet and my ASI1600mm pro camera. This image is a reprocess of the same data with … Continue reading

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