DwarfLab Dwarf mini - Observations with Filter

Introduction | First Experiences with the Solar Mode | First Conclusions | Links

In progress

On this page, I describe my first experiences with my electronic refractor telescope DwarfLab Dwarf mini 30 mm/150 mm (f/5) when observing with filters.

See also:

 

Introduction

         

Photo: My Dwarf mini (Jan 2026)

Inbuilt Filtes

The following three filters are built into the Dwarf min (text from DwarfLab)i:

As a default, the Astro filter is used. However, for some objects, the DuoBand filter is suggested and (not always...) used automatically. It is still unclear to me how this works; somtimes even the Duo filter is proposed in the Atlas, and then when doing the observation the Astro filter is used automatically. I therefore propose to check which filter is actually used (I already had problems with this...).

From what I know, a DuoBand filter is primarily suitable for emission nebulae. Otherwise it should not be used because it also distorts the colors. Of course, it also reduces light pollution, because is transmits only small sections of the light spectrum.

Included Filter

In addition to the inbuilt filters, anexternal magnetic sun filter is included in the Dwarf mini package. See page Observations of the Sun for more information.

 

First Experiences with Observations with Filters

Below I present some DSO that I observed with both the Astro filter and the DuoBand filter for comparison purposes.

M 42/43 (Orion Nebula; Orion)

    

M 42/43, Jan 19, 2026 - 34,5 min, DB filter, section, processed with Stellar Studio and further processed, large

  

M 42/43, Feb 7, 2026 - 50 min, mosaic, processed with Stellar Studio, original

NGC 2237/2244 (Rosette Nebula, Monoceros)

    

NGC 2237/2244, Feb 7, 2026 - 50 min, processed with Stellar Studio, original

  

NGC 2237/2244, Feb 7, 2026 - 50 min, processed with Stellar Studio and additionally strongly processed, original
    

NGC 2237/2244, Feb 9, 2026 - 50 min, DuoBand filter, mosaic, gain 120, processed with Stellar Studio, original

  

NGC 2237/2244, Feb 9, 2026 - 50 min, mosaic, gain 120, processed with Stellar Studio and further post-processed, original

NGC 2264 (Christmas Tree Cluster and Cone Nebula; Monoceros), NGC 2261 (Hubble's Variable Nebula, Monoceros)

    

NGC 2064 mit NGC 2261, 7.2.2026 - 50 min, mit Stellar Studio bearbeitet und nachbearbeitet, Original

  

NGC 2264, 7.2.2026 - 50 min, DuoBand-Filter, Mosaik, mit Stellar Studio bearbeitet und nachbearbeitet, Original

 

First Conclusions

It is still far too early for an initial conclusion. But in general, with the DuoBand filter, the nebulae come out more like what I am used to. In addition, as observed with the Vespera Pro, the DuoBand filter suppresses fainter stars, so these images show considerably fewer stars. This is often a desired effect to make nebulae stand out better.

Note that the DuoBand filter changes the colors of the photo. It is up to you, whether you like that or not...S

 

Links

 

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12.02.2026