The Outer Limits of Amateur White Light Observation

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Before moving on to the main subject of the book, the last word does not end with a 127-mm Maksutov and a Baader filter. Indeed, much larger telescopes and better photographic techniques have been used to obtain "white light" views of the Sun that are much better than I have achieved. It is simply a case of adapting "nighttime" techniques to the Sun. Telescopes and cameras that have been successfully used for planetary and deep sky astrophotography can be reused. If I said that you only need a Baader filter, it would be simplistic but it is possible to use normal color filters in addition. Larry Alvarez has used green (no. 58) filters to increase the contrast on the solar disc.

Using telescopes of greater aperture and higher optical quality to get higher resolution and clearer views is always going to achieve better results. So, for the final word on "white light" viewing, I will let Larry's photos speak for themselves (see Figures 1.4-1.9). Note that these photographs have been taken using advanced equipments and techniques and cannot be matched with entry-level telescopes and domestic digital cameras.

Figure 1.4. Full disc sunspots by Larry Alvarez.

Figure 1.5. White light close-up no. 1 by Larry Alvarez.

First Wliile Light Shot by Larry Alvarez

Figure 1.5. White light close-up no. 1 by Larry Alvarez.

First Wliile Light Shot by Larry Alvarez

Figure 1.6. White light close-up no. 2 by Larry Alvarez.
Figure 1.7. White light close-up no. 3 by Larry Alvarez.

Figure 1.8. White light close-up no. 4 by Larry Alvarez.

Figure 1.9. White light close-up no. 5 by Larry Alvarez.

Figure 1.9. White light close-up no. 5 by Larry Alvarez.

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